Pl3xGates

Fixed:

• Fixed bug when removing gates.
• Fixed bug when removing empty channels
• Fix incorrect plugin description in plugin.yml
• Other various bug fixes here and there

Added:

• Add boolean for "always-on-show-water"
• Add ability to re-use gate names (as long as on different channels)
• Add /pl3xgates command (view version and/or reload configs)
• Add /pl3xinfo command to view stats about a gate
• Add gate owners
• Add channel owners
• Add on/off state with buttons

Other:

• Cleaned up codebase, twice.