[steam/el7] (3 commits) ...Merge branch 'master' into el7
Summary of changes:
aff85bf... Add sources to .gitignore file (*)
838f0cb... Do not run update-desktop-database on Fedora 25+, add AppSt
b6e3d12... Merge branch 'master' into el7
(*) This commit already existed in another branch; no separate mail sent