Added CArrayDataProvider as a grid option for EditableColumn (Fix for Issue #21)

- Added a new allowance for CArrayDataProvider
- Changed exception text slightly to reflect this change
upgrade to x-editable 1.4.4
datetime added
added showbuttons option
changelog: added bootstrap datetime, fix #8, fix #29
Merge branch 'master' of git://github.com/ciarand/x-editable-yii into ciarand-master
Merge branch 'ciarand-master' into dev
changelog: allow CArrayDataProvider for EditableColumn, fix #21
Editable class ready, fix #23
editable column with CArrayDataProvider ready, fix #21