Duplicated Entry Test

[Foggalong]

Currently it doesn't look like we do Travis tests for duplicate entries. We probably should to avoid cases such as this in #4783.

[Foggalong]

@palob I just implemented a test to do this and was shocked at how many fails came back! I was expecting a couple given the size of the database but 18 :grimacing:

Found the following Linux icon names duplicated:
- accessories-thesaurus (2 times)
- azpainter (2 times)
- com.github.jeromerobert.pdfarranger (2 times)
- com.github.lainsce.notejot (2 times)
- com.github.manexim.typewriter (2 times)
- com.github.muriloventuroso.pdftricks (2 times)
- cs-desktop (2 times)
- deepin-deb-installer (2 times)
- freac (2 times)
- freedv (2 times)
- gnome-settings-default-applications (2 times)
- kmail2 (2 times)
- kylin-video (2 times)
- org.tordini.flavio.Minitube (2 times)
- pdfarranger (2 times)
- pdftricks (2 times)
- popsicle (2 times)
- textadept (2 times)

Will submit a fix for that as part of the PR but just thought I'd share

[palob]

I'm a bit snowed under atm, thanks for keeping Numix future-proof, @barelyhuman, @Foggalong , @satya164.

[Foggalong]

That's all good! Hope things are okay :)

[palob]

Thank you for fixing the duplicates up. Did you run into cases of ambiguity or could you make up where the entries belong to (as far as I read the diff you could)?

[Foggalong]

Yeah most cases were pretty unambiguous, clearly apps we'd had generic symlinks for which were later replaced by specific icons.