Merge pull request #2143 from ssushma/dev-branch

folder reordering integrated in my classes
Folders:dev-branch - changed the tool tip display for reorder text box and reorder top mose ant bottom most buttons.
Folders: dev-branch - Reorder panel visibility changed based on the collection/folder count.Merged from 6.6.3.a1 branch.
Merge pull request #2146 from VinRudramurthy/dev-branch

Folders:dev-branch - changed the tool tip display for reorder text box a...
My collections: dev-branch - Added resource reorder missing code from 6.6.3.a1 branch.
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #2147 from VinRudramurthy/dev-branch

My collections: dev-branch - Added resource reorder missing code from 6.6.3.a1 branch.
My classes: Displayed assignment highlight issue rectified.
Merge pull request #2149 from VinRudramurthy/dev-branch

My classes: Displayed assignment highlight issue rectified.
assigning to unit feature enabled back.