Moving betas to main branch. — Thea: The Awakening Steam update #264966

Beta branch accumulated a couple updates since 3rd December, which we're now taking to the main branch. Here's a summary of changes brought by these updates: - fix for gem based items (stats were sometimes not calculated properly); - new difficulty setting - Realism - for those, who need even more challenge; - fixed mass dismantle, which was dismantling cooked food and other items that normally should not be dismantled; - fixed cursed effect that dealt damage after fights and also fixed displaying curse wounds on character skills list; - tweaks for auto-win requirements in auto resolving a challenge - previously the calculations only took into account proportion of units, so when the player had an overwhelming advantage even with weak units, auto-win was used. Now, the quality of units is taken into account as well. - added difficulty setting which enables the player to limit allowed car...