Minor doc and messages fixes [skip ci]
Some doc code cleanup [skip ci]
Reorganized captcha code.
renamed IDataProvider::getItems() to getModels()
Merge pull request #708 from lucianobaraglia/master

Minor doc and messages fixes [skip ci]
Refactored ActiveDataProvider.
Fixes #709.
Fixes #711.
Fixes #704.
Added support for passing parameters to the format method.
Fixes #713.
refactored ActiveDataProvider.
Component::hasProperty() small optimization
Update Component.php
bumped up twig version
mentioned installing from Composer in docs
a bit more overview
checkVar => checkVars
checkVar => checkVars
added note about Redis to performance section