Url documentation typos
change back the readme instruction for creating new project.
created debug panel for elasticsearch

this panel shows all logged elasticsearch queries and allows to execute
them to see the results.
added image to readme
Merge pull request #1382 from cebe/elastic-debug-toolbar

Elasticsearch debug toolbar
Update requirements.php
Removed extra parenthesis in code example
Merge pull request #1392 from Bethrezen/patch-1

Removed extra parenthesis in code example
improved doc
Merge pull request #1389 from gitrad/master

Update requirements.php
Gii crud generator broken
Merge pull request #1395 from lucianobaraglia/master

Gii crud generator broken
fixed whitespace after #1389
Fixes #1397: support customization of the container tag for Html::checkbox() and radio()
removed validated toggling in yii.activeForm after the form validates successfully.
Merge pull request #1403 from zeeke/master

Url documentation typos
Added ArrayHelper::keyExists().
Fixes #1405: fixed disambiguation of relation names generated by gii.
Sphinx test AR classes moved to 'data/ar/sphinx'.
Sphinx Active Record refactored to extend "BaseActiveRecord".