Large amount of bugfixes

* Fixed files not writing correctly when not present, fixes #33 and #27
* Fixed /sudo and /do not working
* Fixed teleporting player to another using wrong names
* Fixed /spawn formatting issues
* Standardised (again) command descriptions
- Removed cheesy ban/kick messages
- Removed some unneeded variables and comments and fixed weather message
Merge pull request #34 from mc-server/bugfixes

Large amount of bugfixes