[PowerBoard] Scoreboard + Tablist + Prefix + Chat | Animated

Changelog:
- Added new options to config.yml:
```
ranks:
options:
show-prefix-in-tab: true
show-suffix-in-tab: true

.....
```
With these options prefix/suffix can be disabled in the tablist and other cases without removing the prefix/suffix completely in the permissions plugin.

- Improved update manager (made safer against failed downloads)

Bugfixes:
- Fixed bug that players have had a double prefix and suffix if they were longer than the text limit.