Add button_plus to minicore
Merge pull request #375 from igorko/master

Add button_plus to minicore
New translation Scottish Gaelic (gd, Gàidhlig)
One translation fix for gd + some unnecessary reformatting thanks to differences between Virtaal & Poedit
New translation for Scottish Gaelic (gd, Gàidhlig)
Translation fix gd
Merge pull request #376 from gunchleoc/master

New translation Scottish Gaelic (gd, Gàidhlig)
Heroic Strike and Greater Channel as power upgrades
Remove test cutscene
Remove obsolete cutscene file
Default mod language updates for v0.19