reorganized the main repo to satisfy PSR-0.
Added psr-0.
ported inflection methods from StringHelper to Inflector helper class
added inflection methods from StringHelper + some comment fixes
JQuery UI bundle assets
JQuery UI bundle assets config
Fixes #312. Additional docs on IDN in EmailValidator and UrlValidator.
Datepicker language assets dependencies
Theme dependencies
jui.widget dependency
fixed pluralize + singularize rules for tests
Merge branch 'upstream' into 313-Inflector-Helper

* upstream:
  Fixes #312. Additional docs on IDN in EmailValidator and UrlValidator.
Fixes #145. Reusable cache dependencies.
jui.effect and jui.position dependencies
added carousel widget
Merge upstream/master into upstream/mssql.
A little yii\bootstrap classes refactoring
Merge remote-tracking branch 'upstream/master' into 331-bootstrap-carousel

* upstream/master:
  A little yii\bootstrap classes refactoring
Refinements to MSSQL driver classes.
MSSQL initial query builder.