Documentation improvements
Deleted obsolete code
[fix] i18n and assets pipeline fixes, little improvements
XML escape/unescape improvements

 - escape feature improved to use 'standard' 5 XML special characters
 - unescape feature added
Added XPath evaluation feature
Generator for tools (first part)

 - generator skeleton added
 - routes injection
 - controller template
 - view template
 - partial support for file uploading
Generator for tools (second part)

 - assets generation
 - model generation
 - upload support
Generator for tools (third part)

 - navbar links generation
 - some refactoring
Generator for tools (fourth part)

 - locales generation
Generator for tools (fifth part)

 - little refactoring
 - docs
 - default action name when only 'upload' specified
Generator for tools (sixth part)

 - autotests
 - fix selenium-webdriver gem version
 - improve docs
Appearance bugfixes

 - fixed problem with hidden Ace editors for large screens (media-query)
 - fixed text of disabled button
Little specs improvements

 - readme changed
 - check for IPv6 on Java 6
 - Config for Firefox added
MIT license added
Merge branch 'developing' into master

  Most significant changes:
  - Refactoring
  - MIT License
  - New tools
  - Tool generator