In the mail section we have very different indentations and formatting in
texts with sanitize, links and texts with interpolations. In my opinion it
helps a lot to have clearer indentations in these cases.
This may not be the best way to indent them, but at least I think it is
clearer than it was and at least relatively unified.
The notification digest title did not look the same as other mail. We
removed the table for the title to make it more consistent with the rest of
the emails.
Note that in Ruby files this rule allows vertical alignment, but doesn't
seem to do the same in ERB. Since we only used vertical alignment in one
place, and that place also had an unneeded extra space on every aligned
line, I've decided to change the code in that place and follow the rule.
Sometimes we're interpolating a link inside a translation, and marking
the whole translations as HTML safe.
However, some translations added by admins to the database or through
crowdin are not entirely under our control.
Although AFAIK crowdin checks for potential cross-site scripting
attacks, it's a good practice to sanitize parts of a string potentially
out of our control before marking the string as HTML safe.
On the proposal notification digest messages there was a link to each
notification. Instead we need that link to point towards the notifications
tab of the proposal.
