Bug 1101158 - Use shared tagged template library for escaping card content r=aus r=freddyb

Conflicts:
	apps/system/js/card.js
	apps/system/test/unit/task_manager_test.js
Merge pull request #26599 from KevinGrandon/bug_1101158_uplift_v2_dot_1

Bug 1101158 - Use shared tagged template library for escaping card content