CC-5594 : Remove all date_default_timezone_get()
CC-5594 : Remove all date_default_timezone_get()

removing now unused old methods
CC-5594 : Remove all date_default_timezone_get()

correcting show contents timezone.
Merge branch '2.5.x' into cc-5594-date_default
CC-5594 : Remove all date_default_timezone_get()

removing unused old methods, changing listener stats to use the user timezone for display.
CC-5594 : Remove all date_default_timezone_get()

replacing timezone with the user timezone pref.
CC-5594 : Remove all date_default_timezone_get()

setting display timezone to be user's timezone for library utime and mtime.
CC-5594 : Remove all date_default_timezone_get()

setting display time using user timezone.
last played was never converted properly for display previously.
CC-5594 : Remove all date_default_timezone_get()

resizing must calculate from displayed calendar settings.
CC-5594 : Remove all date_default_timezone_get()

simplifying code, removing unnecessary calculations.
CC-5594 : Remove all date_default_timezone_get()

fixing up controllers
CC-5594 : Remove all date_default_timezone_get()

updating dashbaord information for timezone.
CC-5594 : Remove all date_default_timezone_get()

DateTime here was relying on a timezone that wasn't what the user selects in the timezone drop down on the form.
CC-5594 : Remove all date_default_timezone_get()

must allow 24 hours, but nothing greater to match old usage.
CC-5594 : Remove all date_default_timezone_get()

using the user selected timezone in the form to calculate duration.
Merge branch '2.5.x' into cc-5594-date_default
CC-5594 : Remove all date_default_timezone_get()

missed a place to set show timezone,
setting UTC timezone in CcSchedule, very important!!
CC-5594 : Remove all date_default_timezone_get()

never rely on this method.
CC-5594 : Remove all date_default_timezone_get()

updating move show code to work with the user's timezone.
unified method signature for updateScheduleStartTime to always use the $diff param.
CC-5594 : Remove all date_default_timezone_get()

moving var serverTimezoneOffset to bootstrap,
also creating a var for userTimezoneOffset.
Utilities.js uses the userTimezoneOffset to calculate time in forms.