fix background on playback toolbar
(cherry picked from commit 53b294dfcbcd6b3509715433db31ae6d34c44d73)
disable sharethis hash, refs #545
(cherry picked from commit aad1d41778cb657a4e6e2f58e090bddd47c23f30)
follow up to #53b294df, fix for info page
(cherry picked from commit 98d2bc48d43049bcb8b8dabb57085f9b668515c0)