Make Libraries book covers default to 95% white background color when no image is available.
Adjust layout and colors of library locations & hours cells.
Tweak confirmation alert for Libraries forms.
Merge branch '3.6-dev' into 3.6/libraries-justin

Conflicts:
	Modules/Libraries/MITLibrariesItemHoldCell.xib
	Modules/Libraries/MITLibrariesItemLoanFineCell.xib
Merge pull request #505 from MIT-Mobile/3.6/libraries-justin

3.6/libraries justin