Adding sort options for the page list (Bug #1302297);

Added options to sort by:
- latest created
- latest modified
- most visited
- most feedback

Change-Id: I382101dc4b226555876fbd42ccd97a0bae77d155
Signed-off-by: Robert Lyon <robertl@catalyst.net.nz>
Merge "Adding sort options for the page list (Bug #1302297);"