Kaltura migration script, fix '>' on all pages

Adds a Kaltura migration script for migrating Kaltura instances.

Hotfix for lti signature issue

PlanReleaseDate: clean and optimize code (#1035)

* test README

* PlanReleaseDate: updated UTC display

* PlanReleaseDate: test and clean code

* PlanReleaseDate: test and clean code

* PlanReleaseDate: test and clean code

* PlanReleaseDate: test and clean code

* PlanReleaseDate: test and clean code

* PlanReleaseDate: test and clean code

* PlanReleaseDate: test and clean code

* PlanReleaseDate: test and clean code

* PlanReleaseDate: test and clean code

* PlanReleaseDate: test and clean code

* Update to use System TZ as default

* Add env APP_TIMEZONE

* Update and clean code

Co-authored-by: TueHoang <tuehoang@yahoo.com>

Update some text to Plan Release Date tool.

Update some text to Plan Release Date tool.

ADD send submittedAt timestamp for LTI grade syncs

Fix PDF viewer failing to load international font files