Fixed massive lag when opening the Leaderboard Frame

Closes #617
Added loading message to the buttons lore
Previous and Next page buttons now hide if they have no use

Fixed maven build action

Ref was in the wrong action

Merge remote-tracking branch 'origin/master'

Updated language files

Removed old repo

Fixed globalff usage

Fixed Russian translation for the ff commands ("allow", "block" and
"auto")
Closes #594

Now saving periodically to db

Added update checker
Removed usage of SimpleClans#getLog()

Added PlaceholderAPI support (#587)

Added PlaceholderAPI support
Refactored PlaceholderHook

Co-authored-by: RoinujNosde <edsonpassosjr@outlook.com>

Merge branch 'master' of https://github.com/marcelo-mason/SimpleClans…

….git

Forgot to update table