#2711: Remove filter that prevents toolbar drawer for appearing.
Merge pull request #2712 from openscholar/2711-ie8_toolbar

Remove filter that prevents toolbar drawer for appearing.
HWPI themes: link color contrast update.#2704
HWPI themes: minor css fixes. nice menu dropdown position and minical arrow style.#2687
Fixed: IE8 upcoming events running into sidebar.#2778
#2774: Fix fatal when no id can be found for file_usage.
Merge pull request #2786 from openscholar/2774-no_id_in_media_embed

Fix fatal when no id can be found for file_usage.
Merge in 3.5 and fix merge conflicts