Merge pull request #179 from seesmith/master

Exhibitions and IOG fixes
LIB001-840: Quickfixes made
Merge pull request #180 from ianthe/LIB001-840

LIB001-840: Quickfixes made
LIB001-794 Exhibitions Collection
LIB001-839	Update social links in collections
LIB001-835 IOG fixes after test release
LIB001-845: Adding link to unavailable page for unavailable papers in search results
Merge pull request #181 from ianthe/LIB001-845

LIB001-845: Adding link to unavailable page for unavailable papers in se...
Merge remote-tracking branch 'upstream/master'
LIB001-843 Add 2015 Calendar Metadata and Images