Show send e-mail controls in diffviewer

Review Request #7566 — Created Aug. 4, 2015 and submitted — Latest diff uploaded

Information

Review Board
release-2.5.x

Reviewers

Previously, the send e-mail controls were not showing in the diffviewer
becuase the template context lacked the "send_email" context variable.
This has been corrected and the controls now render properly in the
diffviewer when e-mail is enabled.

Ran unit tests.

Verified the controls show when e-mail is enabled and do not when it is
disabled.