Fix invalid spacing style warnings.
Info -> info.
Usings order.
Fix capitalization.
Fix variable ordering.
Remove underscore prefix.
Fix public/static ordering.
Disable SA1509.
Rename static fields in SettingsLogic.
Add Mods.Common to make check.
Fix style nits in Mods.TS.
Add Mods.TS to make check.
Fix d2k spacing and ordering style nits.
Fix d2k naming style nits.
Add Mods.D2k to make check.
Update INSTALL.md

add Windows PowerShell as dependency for the Makefile substitutes
Merge pull request #7193 from pchote/style

Fix and enforce code style in Mods.Common, D2k, and TS.
this has already been resolved in #7121 and #7187
StyleCop
register Linux MIME type to directly load replays