Added text-x-install from upstream
mimes/48/application-x-sln from upstream
Added application-x-bittorrent from upstream
upstream change in apps/128/application-default-icon.svg
application-x-sln added in the mimes/32, 96 and 128, fixed sheet style in 22 and 24 and color scale in 64
Merge pull request #55 from sergiobenrocha2/from-upstream

Update some mime types from upstream