Update Chinese translation

Update Chinese translation after CC-5334
Merge branch '2.5.x' of dev.sourcefabric.org:airtime into 2.5.x
CC-5334 : Localize Ryerson History Feature
CC-5334 : Localize Ryerson History Feature

adding string "New log sheet template"
CC-5335 : I18N: Calendar picker strings are not translated.

loading the same strings as the jquery calendar.
CC-5317 : Guest user can't see Now playing page

removed the library module completely from page if the user does not have permission to view it.
crlf fix
CC-5338 : Uncaught SyntaxError: audio resources unavailable for AudioContext construction

creating a single global audio context to avoid resource problems.