Remove leading and trailing blank lines in review comments.

Review Request #4561 — Created Sept. 12, 2013 and submitted — Latest diff uploaded

Information

Review Board
master

Reviewers

Remove leading and trailing blank lines in review comments.

When a user submits a review comment, leading and trailing
blank lines are saved as part of the comment. We want to strip
these blank lines before saving the comment to the database.

Reviewed at https://reviews.reviewboard.org/r/4561/
Fix for issue 2933

Created new review request and manually tested:

-review
-review reply
-diff comment
-reply diff comment
-file attachment comment
-reply file attachment comment

Unit tests pass.