Update packages.php

solves https://github.com/clevertech/YiiBooster/issues/672
Merge pull request #673 from fleuryc/patch-1

Update packages.php
Merge branch '1.1.0' of github.com:clevertech/YiiBooster into 1.1.0
Merge branch '1.1.0'
Updated version to 3.0.0~alpha, we're going to release version 3 with a small stop at 2.1.0
Now callback declared for sortable gridview will properly fire after the sortable action event.
fixes #680
Added a rolling-release section to CHANGELOG
Merge branch 'datetimepicker_fixes' of git://github.com/adeg/YiiBooster into adeg-datetimepicker_fixes
Moved CHANGELOG entry about fix in datetimepicker's assets to proper section