install-deps.sh: arch: wording changes
gitignore: be more clever
Merge pull request #395 from matthiaskrgr/install_deps

install-deps.sh: arch: wording changes
Merge pull request #398 from matthiaskrgr/gitignore

gitignore: be more clever
build_make_clean.sh: also make clean in build_cef, if existing.
Merge pull request #400 from matthiaskrgr/build_make_clean

build_make_clean.sh: also make clean in build_cef, if existing.
build_desura.sh: make output more easy to read.
Merge pull request #403 from matthiaskrgr/build_desura_2

build_desura.sh: make output more easy to read.
Travis:

Use install-deps.sh
Run make test
Notify in #desura, if build status changes from broken to ok, or from ok to broken.
Travis: remove redundant tests.
Merge pull request #405 from matthiaskrgr/travis

Travis: