Open Source release prep

• Moved the link to main site/docs into nav bar
• Cleaned up application.ini
• Disabled/hidden tools and modules that aren't complete/updated
• Updated the design of the settings section
• Updated design of further reading links, added additional links now that app is just an app and not also a web site
• Removed content not specific to app, Dlayer used to be app and web site
• Included Zend framework in library
• Docs moved to dlayer.com/docs, were at specification.dlayer.com
• New design for designers, initially Image library, fully responsive designer
• Styling updates
• Content updates
• Refactoring
• Removed redundant code