Cleaned up messages.conf

- Removed some unused messages.
- Re-mapped some duplicate IDs - fixes bugreport:8057, thanks to
  AnnieRuru http://hercules.ws/board/tracker/issue-8057-jobname-with-invalid-id-return-tomb/
- Fixed some issues with the message range loaded by the char server.
- Reworded some messages, fixed typos in others.

Note for translation users: some messages have been remapped to new IDs.
You'll need to remap them in your custom translations as well. The list
of changes is as follows:

- Removed messages (you can safely remove them from your translations):
  15, 26-27, 35, 48-52, 57-58, 65-69, 82-83, 86-87, 91, 101, 140-142,
  164, 189-194, 199-200, 202-203, 209-211, 215-218, 267-268, 275,
  289-290, 380-385, 387-388, 401, 497, 499, 535-537, 922, 995, 1063,
  1079, 1291-1294
- New messages (you need to add them to your translations): 15
- Moved messages (you need to change their IDs in your translations file):
  * [Unknown Job] 656 -> 620,
  * [Job names] 681~693 -> 656~668
  * [Tombstone related] 656~661 -> 856~861
  * [Etc messages] 662~680 -> 862~880
  * [@version] 1436 -> 1294
  * [Hercules Chat] 1475 -> 1436

Signed-off-by: Haru <haru@dotalux.com>