Fix for issue #204

The rewriting here is wrong, if the URL on the item itself is already set we do not want to cripple it.
We can have active parent menu items, you know.:)
Update TbToggleColumn.php

value property is added. if set- checked state calculated from this property. can be php expression
Added widget for displaying button groups in greed widget.
Updated comment
Removed needless tooltips
Found small display bug. Solved.
Enable buttons with icons instead of text
Fix for IE Gridview Keypress/Change event

Adresses
https://github.com/yiisoft/yii/issues/773
https://github.com/yiisoft/yii/pull/1150
Merge branch 'master' of git://github.com/Tak0r/YiiBooster into Tak0r-master
Merge branch 'TbGroupButtonColumn' of git://github.com/Alegzander/YiiBooster into Alegzander-TbGroupButtonColumn
Merge branch 'Alegzander-TbGroupButtonColumn' into 1.0.7-wip
Merge branch 'patch-1' of git://github.com/earx/YiiBooster into earx-patch-1

Conflicts:
	widgets/TbToggleColumn.php
Merge branch 'earx-patch-1' into 1.0.7-wip
Merge branch 'patch-1'
Merge branch 'master' into 1.0.7-wip
Update x-editable-yii from 1.3.0 to 1.4.0 #413
Merge pull request #431 from magefad/update-x-editable

Update x-editable-yii from 1.3.0 to 1.4.0 #413
Include specific FontAwesome CSS for IE7
Fixed latest changelog entry which really belonged to 1.0.7

Corrected information about the Antonio in changelog.
Put all of sourcecode into the separate `src` directory
re #263