[DocViewer] Allow hyperlinks in annotated comments

Problem statement:

In DocViewer, annotation comments that contain hyperlinks appear as plain text. The viewer needs to copy and paste the link as a workaround.

Example: The link in the annotation comment is not clickable in SpeedGrader nor Submission Details.

Link inside annotation commentLink inside annotation comment

Proposed solution:

Allow hyperlinks to be clickable so that viewers do not need to copy and paste the text.

User role(s):

admin,instructor,student,ta,designer