restyling catalog views
styling round 2
removing unnecessary methods
edit num_available in reservation_validation
added call to relevant_reservations
refactor nil handling in available
erge branch 'development' into 628_refactor_catalog
Merge pull request #628 from YaleSTC/628_refactor_catalog

Catalog render NO LONGER takes forever.
Dynamically generated constant APP_VERSION contains latest version
Added version display for admins to footer and Settings
made version on settings page bigger
Merge pull request #560 from YaleSTC/560_display_version

Display version somewhere in the admin view?
Merge branch 'development' into 587_fix_cart_latency