Added sortable table columns and view
Updated view to catalogue page
Working on adding filtering to results
Updated sidebar filtering results
Fixed the sorting from previous commit
Added sidebar filtering

Search got change -- need to apply these changes to the latest search
(to be added in next commit)
Fix item.rb merge conflict
Merge expr_search branch
Tweaked search to work on the catalogue page

Added publisher to dropdown menu for search selections
Merge branch 'master' into exp

Conflicts:
	Gemfile.lock
Gemfile shit.