Plan B - v0.6.7 build 672

Improvements:
- added water overlay to show the risk of floods and better understand water movement - check new help page about it
- added loading tips
- unpause now goes back to previous speed
- improved status bar text
- improved water flowing (to get rid of remaining water much faster when you build a dam)

Bugs fix:
- fixed drones & trains still there after a new game
- fixed vehicles (& drones bugs) not working anymore (even when creating a new game), when reaching max vehicles count
- fixed UI Scale option not updated on click
- removed some web connexion (unity stats) that did some freeze at launch in very rare cases
- fixed some issue that reset the recipe of a building you try to duplicate
- fixed camera not moving to the target exactly
- removed SF6 / NF3 from recipe picker
- fixed water disappearing sometimes at new game

Minor:
- added a link to wiki
- opens credits at last level
- fixed animation pause on home menu
- texts updated from crowdin
- fixed green debug showed 1 frame at start
- improved lua security