This commit renames Edit to Edit message and Collapse to Collapse message
for better readability and to match the Delete message and
Copy link to message options.
The inconsistent style between these three buttons looked bad.
We have to take some care with the "Starred messages" and "Edit" ones,
to make sure they live-update properly.
We already have single-key shortcuts for all message controls but Zulip
should be usable from the keyboard without having to learn a bunch of
Zulip-specific keyboard shortcuts.
This commit adds a handlebar template for the View source/Edit message
button in message controls in the message view.
This change also fixes the broken html titles that were added in
commit fdbab54614, and adds proper
internationalization for the title text.
Tim Abbott
Akarsh Jain
Gittenburg
Vinit Singh