KSP MA v2.0.0.7

- New config file path handling for Linux & OSx.
  On Linux the config file path will be "$HOME/.ksp_mod_manager".
  On OSx the install path of KSP MA would be used.
- Mono related bug fixes for multi OS support (Does KMA² now work on Linux and Mac?).
- Update check & Download support for BitBucket & GitHub.
- Bug fixes for Mod update.
- Bug fixes for multi select in ModSelection.
- New ModSelection ContextMenu buttons for several "...highlighted mods..." options added.
  (The ContextMenu detects if more the one Mod (not ModNode) is selected and will show/hide the new "highlighted mods" buttons)
- Lots of other bug fixes.