Compile datepicker.less error
Merge pull request #390 from ilyadoroshin/master

Fixed datepicker.less compile error
datepicker.less button background fix
Merge pull request #391 from ilyadoroshin/master

datepicker.less button background fix
Fixed filename for datepicker.js
Merge pull request #393 from ilyadoroshin/master

Fixed name for datepicker.js in base_initializr.html.twig
include the core variables and mixins so as to avoid compile errors
Merge pull request #394 from ychadwick/master

datepicker.less comile error problem
Changed datepicker less file name
Added new style caret and created addIcon function
Updated copyright date
Refactored hasParent and hasChildren

Code refactoring to avoid deprecated calls with symfony2.1 / 2.2.
For better readability avoided not clauses
Merge pull request #396 from peterrehm/patch-5

Refactoring for Symfony 2.1/2.2 compatibility
Updated bridge version required
Fixed versiobn string