Update snakeyaml, slf4j and icu4j

And exclude slf4j-simple and woodstox from okapi dependencies

pom.xml

@@ -45,7 +45,7 @@
     <groovy.version>2.4.5</groovy.version>
     <guava.version>19.0</guava.version>
     <gwt.version>2.7.0</gwt.version>
-    <icu4j.version>55.1</icu4j.version>
+    <icu4j.version>56.1</icu4j.version>
     <lombok.source.dir>${project.build.sourceDirectory}/org/zanata</lombok.source.dir>
     <lucene.version>3.6.2</lucene.version>
     <org.mock-server.version>3.9.17</org.mock-server.version>
@@ -82,6 +82,7 @@
     -->
 
     <solr.version>${lucene.version}</solr.version>
+    <seam.version>2.3.1.Final</seam.version>
     <slf4j.version>1.7.18</slf4j.version>
     <gwteventservice.version>1.2.1</gwteventservice.version>
     <okapi.version>0.29</okapi.version>
@@ -280,7 +281,7 @@
       <dependency>
         <groupId>org.yaml</groupId>
         <artifactId>snakeyaml</artifactId>
-        <version>1.13</version>
+        <version>1.16</version>
       </dependency>
 
       <dependency>
@@ -330,8 +331,12 @@
         <groupId>org.slf4j</groupId>
         <artifactId>jul-to-slf4j</artifactId>
         <version>${slf4j.version}</version>
-        <scope>provided</scope>
       </dependency>
+      <!--<dependency>
+        <groupId>org.slf4j</groupId>
+        <artifactId>slf4j-simple</artifactId>
+        <version>${slf4j.version}</version>
+      </dependency>-->
 
       <dependency>
         <groupId>org.jboss.spec</groupId>
@@ -912,6 +917,10 @@
             <groupId>net.sf.okapi.logbind</groupId>
             <artifactId>build-log4j</artifactId>
           </exclusion>
+          <exclusion>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-simple</artifactId>
+          </exclusion>
         </exclusions>
       </dependency>
 
@@ -936,6 +945,10 @@
             <groupId>net.sf.okapi.logbind</groupId>
             <artifactId>build-log4j</artifactId>
           </exclusion>
+          <exclusion>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-simple</artifactId>
+          </exclusion>
         </exclusions>
       </dependency>
 

zanata-war/pom.xml

@@ -1716,30 +1716,76 @@
     <dependency>
       <groupId>net.sf.okapi.filters</groupId>
       <artifactId>okapi-filter-dtd</artifactId>
+      <exclusions>
+        <exclusion>
+          <groupId>org.slf4j</groupId>
+          <artifactId>slf4j-simple</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
     <dependency>
       <groupId>net.sf.okapi.filters</groupId>
       <artifactId>okapi-filter-html</artifactId>
+      <exclusions>
+        <exclusion>
+          <groupId>org.slf4j</groupId>
+          <artifactId>slf4j-simple</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
     <dependency>
       <groupId>net.sf.okapi.filters</groupId>
       <artifactId>okapi-filter-idml</artifactId>
+      <exclusions>
+        <exclusion>
+          <groupId>org.slf4j</groupId>
+          <artifactId>slf4j-simple</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
     <dependency>
       <groupId>net.sf.okapi.filters</groupId>
       <artifactId>okapi-filter-openoffice</artifactId>
+      <exclusions>
+        <exclusion>
+          <groupId>org.slf4j</groupId>
+          <artifactId>slf4j-simple</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
     <dependency>
       <groupId>net.sf.okapi.filters</groupId>
       <artifactId>okapi-filter-plaintext</artifactId>
+      <exclusions>
+        <exclusion>
+          <groupId>org.slf4j</groupId>
+          <artifactId>slf4j-simple</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
     <dependency>
       <groupId>net.sf.okapi.filters</groupId>
       <artifactId>okapi-filter-regex</artifactId>
+      <exclusions>
+        <exclusion>
+          <groupId>org.slf4j</groupId>
+          <artifactId>slf4j-simple</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
       <dependency>
         <groupId>net.sf.okapi.filters</groupId>
         <artifactId>okapi-filter-ts</artifactId>
+        <exclusions>
+          <exclusion>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-simple</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>org.codehaus.woodstox</groupId>
+            <artifactId>woodstox-core-lgpl</artifactId>
+          </exclusion>
+        </exclusions>
       </dependency>
     <dependency>
       <groupId>net.sf.okapi</groupId>