[WIP] #147 Database Rework

[Cinnazeyy]

This is a PR for issue #147

Last things missing:

• [x] Fix leaderboard query
• [x] Fix total completed plots query
• [x] Add caching (or remove it completly) - it's currently broken
• [x] Fix Focus mode (currently its generating void world without actual schematic)
• [x] Add "Umlaute" Conversion for city names & else where needed (Migration Tool)
• [x] Default City Names (Migration Plugin)
• [x] Fix #165
• [x] Improve & Expand Documentation - mainly about new Database Design + Review System + City + Country Translations
• [x] Update Readme & remove HolographicDisplays mentions
• [x] Maybe fix #167 - because that should be really easy & is explained good in the issue
• [x] Add Default system_info entry for new installations (for existing its created in Migration Tool - see discord msg)
• [x] Test if disable-city-inspiration-mode config works as expected
• [x] Add build_team_uses_toggle_criteria logic for the criterias -> currently no toggle criteria are possible to use/add
• [x] Fix LangLibs setDynamicKey Bug (or remove it from Plot-System)
• [x] Fix the Bugs with Longhi (abondon doesnt work + he cannot review plots)
• [ ] Undo review voids plot - Longhi Bug on Discord

[Zoriot]

com.alpsbte.plotsystem.utils.enums.Category is not used anymore and should be deleted

[Zoriot]

The message BUILDER COULD NOT BE CREATED!! is send on a regular basis. Without any more infos, this is a active regression & have to be fixed