Implement Autofixes starting with bookend whitespace
Create AutoFix to replace dots with an ellipsis
Use appsettings with autofixes
Improve parsing of flags from Gettext PO files

As translate-toolkit does no parsing here (it just throws at us whole
comment lines), we need to do some processing to get nicely formatted
flags (fixes #276).

While working with them, we can also remove fuzzy flag, as it is already
represented by boolean flag within the unit (fixes #275).
Increase font size in translation textarea

Fixes #272
Merge pull request #279 from ChrisOelmueller/font-size-272

Increase font size in translation textarea
Update po files
Translated using Weblate (Greek)

Currently translated at 100.0% (798 of 798)
Add management command to import list of users
Ignore &nbsp; in string
Do not fire same check on email address (issue #280).
Ignore ISBN keyword
Do not fire same check on URLs (issue #280)
Skip IRC channel from checking same strings (issue #280)
Skip domain names when checking for same string (issue #280)
Wrap too long lines
Cache same check results

The source string is most likely to be same in all languages so it is
useful to store ignore list in cache.
Ignore some more HTML entities
Add another test
Strip some unicode symbols as well