If we use string concatenation to span i18n strings across multiple
lines then we end with such strings to be translated by the translators:
```
"This is the first line"\n + "This is the second line"
```
We should use variables in i18n strings to give proper context to the
translators. If the pattern is this:
```
i18n.t("Count " + count + " items")
```
Then it will be captured like this:
```
{"Count" + count + "items": ""}
```
Which is not good for the translators.
This comes from, in the dev environment:
./manage.py makemessages -l en -l ja
tx push -s -l ja
tx pull -f -l ja --mode=developer
The makemessages and `tx push` provide Transifex with the updated set
of strings and metadata. I'm not entirely sure why that's necessary,
but without it a lone `tx pull` left the server crashing with numerous
zerver.models.DoesNotExist exceptions.
(So to be precise, there was another `tx pull` at the start, just like
the final one. That shouldn't matter for the result, though.)
This commit completely switches us over to using a
dedicated model called MutedTopic to track which topics
a user has muted.
This includes the necessary migrations to create the
table and populate it from legacy data in UserProfile.
A subsequent commit will actually remove the old field
in UserProfile.
This responsively hides the last row of testimonials that only has a
single one it the row at certain widths in which the grid is a [4, 4,
1] layout, making it simply [4, 4].
This removes the scaling feature where a plan that a user
hovers over would increase in size and have a box shadow.
This used to be here because there was a clickable region that
would pop open an overlay that would have more plan information,
but that feature no longer exists.
This changes the second plans block label to dark grey responsively
when the width is less than 1390px because the white text does not
appear on that portion of the white background when the block collapses
down a line.
Instead of peeking directly at the DB to verify our mutes are
set correctly, we now use the library function. This prepares
us to modify the DB internals while preserving the tests.
Since these usually result from changes to HTML templates and other
frontend-side things, it seems better to group them with the frontend.
[Tweaked by gnprice in whitespace and comments.]
The original had two bugs in this line of code that cancelled each other
out. 4d0f304 fixed one, causing hotspots to no longer appear. This commit
fixes the second.
