Bundle of changes

[mbax]

• Upgraded maven shade plugin.
• Added a very basic .gitignore to filter stuff out.
• Improved FactionsUUID (legacy) support.
  • Pulls the 1.8-compatible jar (still compatible with the current latest).
  • Fixes potential error of putting a null faction in a wrapper when getting an invalid faction tag.
  • Removes potential issue of someone creating a faction named wilderness.
  • Properly throws expected IllegalStateException when trying to delete a nonexistent faction.
  • Saves a network call if using Spigot and getting a player's UUID.
  • Save several steps in FactionsAPI by not cycling between wrapper/non-wrapper just to end in a wrapper anyway.
• Adds FactionsUUID 4.0 support - the upcoming FactionsUUID release. It is finally a break away from shared plugin name and package, which means it breaks stuff and requires its own provider.