[#526] Added cheat sheet support to standard docviewer module

Each cheat sheet could be accessed via url '@documentation/cheatsheets/{category}'

documentation/cheatsheets/commandLine/ch25-CommandLinePlayCommand.textile

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+h2. Command line - play command
+
+*classpath*
+Display the computed classpath
+
+*id*
+Define the framework ID, used for multi environment config
+
+*secret*
+Generate a new secret key, used for encryption
+
+*install*
+Install a module
+
+*list-modules*
+List modules available from the central modules repository
+
+*modules*
+Display the computed modules list
+
+*new*
+Create a new application
+
+*new-module*
+Create a module
+
+*build-module*
+Build and package a module
+
+*eclipsify*
+Create all Eclipse configuration files
+
+*netbeansify*
+Create all NetBeans configuration files
+
+*idealize*
+Create all IntelliJ Idea configuration files
+
+*javadoc*
+Generate your application Javadoc
+
+*auto-test*
+Automatically run all application tests
+
+*clean*
+Delete temporary files (including the bytecode cache)
+
+*test*
+Run the application in test mode in the current shell
+
+*precompile*
+Precompile all Java sources and templates to speed up
+application start-up
+
+*war*
+Export the application as a standalone WAR archive
+
+*run*
+Run the application in the current shell
+
+*start*
+Start the application in the background
+
+*stop*
+Stop the running application
+
+*restart*
+Restart the running application
+
+*status*
+Display the running application's status
+
+*out*
+Follow logs/system.out file
+
+*pid*
+Show the PID of the running application
+
+*check*
+Check for a release newer than the current one
+
+*help*
+Display help on a specific command
+
+

documentation/cheatsheets/controllers/ch01-ControllerActionSmartbinding.textile

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+h2. Controller.action - Smart binding
+
+*==Controller/link?i=32&n=patrick==*
+==public static void link(int i, String n)==
+==public static void link(Integer i, String n)==
+==public static void link(Long i, String n)==
+
+*==Controller/show?id[0]=1&id[1]=2&id[2]=3&id[3]=4==*
+==public static void show(Long[] id)==
+==public static void show(List<Long> id)==
+==public static void show(Set<Long> id)==
+
+*==Controller/get?date=02-18-1972==*
+==public static void get(@As("MM-dd-yyyy") Date date)==
+
+*==(@As(binder=MyCustomStringBinder.class))==*
+Custom parameter binder
+
+*Send File as multipart/form-data encoded post request*
+public static void create(String comment, File attachment)
+
+*==?client.name=paul&client.email=contact@crionics.com==*
+public static void create(Client client) POJO binding
+
+*@NoBinding*
+Marks a non bindable field
+

documentation/cheatsheets/controllers/ch02-ControllerActionValidation.textile

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+h2. Controller.action - Validation
+
+*==@Required String lastname==*
+*==@IsTrue String agree==*
+*==@Max(7500) Integer wordCount==*
+*==@Min(18) Long age==*
+*==@MaxSize(2083) String value==*
+*==@MinSize(42) String value==*
+*==@Email String address==*
+*==@Equals("passwordConfirmation") String password==*
+*==@InFuture String dueDate==*
+*==@InFuture("1979-12-31") String birthDate==*
+*==@Match("[A-Z]{3}") String abbreviation==*
+*==@Match("(directDebit|creditCard|onReceipt)")==*
+*==@Past String actualDepartureDate==*
+*==@Past("1980-01-01") String birthDate==*
+*==@Range(min = 17500, max = 40000) String wordCount==*
+*==@URL String address==*
+*==@Valid Person person==*
+Pojo validation - class Person needs validation annotations

documentation/cheatsheets/controllers/ch03-ControllerSessionManagement.textile

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+h2. Controller - Session Management
+
+*WARNING: Play Session is NOT the J2EE session*
+session and flash use cookies! 4kb limit/20 cookies max
+
+*session.getId();*
+Returns the session Id - in most cases: a must have!
+
+*session.put(String key, String value);*
+*session.get("user_flag");*
+Values are limited to Strings, 4kb max
+
+*flash.put(String key, String value);*
+*flash.get(String key);*
+Flash entries are discarded at end of next call
+
+*Cache.set("key_" + id, product, "30mn");*
+Set cache value for 30 minutes
+
+*Cache.get("key_" + id, Product.class);*
+Get cache value, may return null
+
+*Cache.delete("key_" + id);*
+Non blocking cache delete
+
+*Cache.safeDelete("key_" + id);*
+Blocking cache delete
+

documentation/cheatsheets/controllers/ch04-ControllerActionRedirection.textile

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+h2. Controller.action - Redirection
+
+*render(params...);*
+Renders template with given parameters, text/html
+
+*renderXML(params...);*
+Renders parameters as application/xml
+
+*renderJson(params...);*
+Renders parameters as application/json
+
+*renderText(params...);*
+Renders parameters as text/plain
+
+*renderTemplate("Clients/showClient.html", id, client);*
+Bypasses default template
+
+*redirect("http://www.crionics.com");*
+Http redirect to the given URL
+
+*From an action, calling another Controller.action()*
+The framework transparently generates a REDIRECT!
+

documentation/cheatsheets/controllers/ch05-ControllerJobs.textile

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+h2. Controller - Jobs
+
+*==@OnApplicationStart==*
+*==@On("0 0 12 ∗ ∗ ?")==*
+*==@Every("1h")==*
+==public class Bootstrap extends Job {public void doJob() {...} }==
+

documentation/cheatsheets/controllers/ch06-ControllerInterceptions.textile

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+h2. Controller - Interceptions
+
+*==@Before ➟ action ➟ @After ➟ template ➟ @Finally==*
+Interceptions evaluation order
+
+*==@Before static void checkAuthentification()==*
+*==@After static void log()==*
+*==@Finally static void audit()==*
+You get the idea
+
+*==@With(Secure.class)==*
+*==public class Admin extends Application==*
+Custom interceptors at the controller scope
+

documentation/cheatsheets/controllers/ch07-ControllerActionOthers.textile

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+h2. Controller.action - Others
+
+*==Logger.info("Action executed ...");==*
+*==Logger.debug("A log message");==*
+*==Logger.error(ex, "Oops");==*
+Logging configuration lives in application.conf
+
+*==@CacheFor("1h") public static void index() { ... }==*
+Caches the result of the action for 1h
+
+*==Play.configuration.getProperty("blog.title");==*
+Access to the configuration file
+
+*==Query query = JPA.em().createQuery(“query”);==*
+Access the persistence manager
+

documentation/cheatsheets/controllers/ch08-ControllerLibraries.textile

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+h2. Controller - Libraries
+
+*==WS.url(“http://s.com/posts”).get().toJSON();==*
+HTTP get request to JSON
+
+*==WS.url(“http://s.com/”).post().toXML();==*
+HTTP post request to XML
+
+*==XML.getDocument(String);==*
+String to XML
+
+*==XML.serialize(Document);==*
+XML to String
+
+*==XPath.selectNodes(String xpath, Object node);==*
+XPath expression evaluator
+
+*==Files.copy(File,File);==*
+File copy
+
+*==Files.copyDir(File,File);==*
+Recursive directory copy
+
+*==Files.delete(File);==*
+*==Files.deleteDirectory(File);==*
+Deletes file/directory
+
+*==IO.readLines(File);==*
+*==IO.readContentAsString(File);==*
+*==IO.readContent(File);==*
+*==IO.write(byte[],File);==*
+Read/Write file contents
+
+*==Images.crop(File orig,File to, int x1, int y1, int x2, int y2);==*
+*==Images.resize(File orig, File to, int w, int h);==*
+*==Images.toBase64(File image);==*
+Handy methods!
+
+*==Crypto.encryptAES(String);==*
+*==Crypto.decryptAES(String);==*
+Encryption using the application secret key
+
+*==Crypto.passwordHash(String);==*
+Create an MD5 password hash
+
+*==Codec.UUID();==*
+Generates unique IDs
+
+*==Codec.byteToHexString(byte[] bytes);==*
+Write a byte array as hexadecimal String
+
+*==Codec.encodeBASE64(byte[] value);==*
+*==Codec.decodeBASE64(String base64);==*
+Encode/Decode a base64 value
+
+*==Codec.hexSHA1(String);==*
+Build a hexadecimal SHA1 hash for a String
+

documentation/cheatsheets/model/ch14-ModelActionQueries.textile

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+h2. Model.action - Queries
+
+*==Query query = JPA.em().createQuery(“jpql_query”);==*
+Access the persistence manager
+
+*==Post post = Post.findById(id);==*
+*==List<Post> posts = Post.findAll();==*
+Finder methods
+
+*==post.save();==*
+Saves the object to the persistent store
+
+*==boolean post.validateAndSave();==*
+true if object validates and saved, see validation annotations
+
+*==List<Post> posts = Post.all().from(50).fetch(100);==*
+Read records 50 to 100, if any
+
+*==Post.find("select p from Post p, Comment c where c.post==*
+*=== p and c.subject like ?", "%hop%");==*
+Parametrized lookup using a join
+
+*==long userCount = Post.count("author=?", connectedUser);==*
+*==long postCount = Post.count();==*
+Counting records
+
+*==JPAPlugin.startTx(boolean readonly);==*
+*==JPAPlugin.closeTx(boolean rollback);==*
+Custom transaction control methods
+
+*==JPA.setRollbackOnly();==*
+Forces a transaction rollback
+

documentation/cheatsheets/model/ch15-ModelBasics.textile

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+h2. Model - Basics
+
+*==@Entity(name=”sql_tbl”) public class Post extends Model==*
+Specifies that the class is persistent
+
+*==@Embedded==*
+Defines this field as being embedded
+
+*==@EmbeddedId==*
+Defines this field as being (part of) the identity for the class,
+and being embedded into this class
+
+*==@Embeddable==*
+Specifies that the class is persistent embedded in another
+persistent class
+
+*==@MappedSuperclass==*
+Specifies that this class contains persistent information to be
+mapped in a child
+

documentation/cheatsheets/model/ch16-ModelGenerators.textile

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+h2. Model - Generators
+
+*==@GeneratedValue(strategy = [NONE, TABLE, SEQUENCE,==*
+*==IDENTITY, AUTO])==*
+Used to generate auto indexes
+
+*==@SequenceGenerator==*
+Defines a generator of values using sequences in the
+datastore for use with persistent entities
+
+*==@TableGenerator==*
+Defines a generator of sequences using a table in the
+datastore for use with persistent entities
+

documentation/cheatsheets/model/ch17-ModelRelationalMapping.textile

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+h2. Model - Relational mapping
+
+*==@Table(name=”sql_tbl”, catalog=””, schema=””)==*
+Defines the table where this class will be stored
+
+*==@Id==*
+Defines this field as being (part of) the identity for the class
+
+*==@Version==*
+Defines this field as storing the version for the class
+
+*==@Basic==*
+Defines this field as being persistent, can be omitted
+
+*==@Transient==*
+Defines this field as being transient (not persisted)
+
+*==@Lob(fetch=[LAZY, EAGER], type=[BLOB,CLOB])==*
+Defines this field as being stored as a large object
+
+*==@UniqueConstraint(primary=false, String columns[])==*
+Used to define secondary indexes
+
+*==@Temporal(DATE,TIME,TIMESTAMP)==*
+Should only be used on java.util.Date and Calendar fields
+
+*==@Enumerated(ORDINAL, STRING)==*
+Defines this field as storing an enumerated class
+
+*==@Column(name=”sql_column_name”)==*
+Should the table column name be different from the field name
+
+