Review gitignore file - Githubissues

Perhaps we should take a look at our gitignore file and what type of files we should/should not ignore.

Some issues I've found with this:

nanopb .bin files are ignored so that you can not use the program to auto-genereate protobuffer code
for some reason I'm having problem with .settings/language.settings.xml file although we are ignoring .settings/

There are also some ignores in there that are not relevant to our repository at all

afry-south / dragonfly-fcb