Delete upgrade.sql
Changes to API

Added permission control to all functions

Added "adduser"-functionality
Changes to API

Changed action name "lst-vouchers" to "lstvouchers"

Added functions: addpermission, lstpermission
Changes to API

Bugfix: addpermission-command will not add permissions, it will drop
them

Added droppermission and dropuser
Update api.php

lstuser (not finished yet)
Changes to API

Finished lstusers and removed senseless check of parameter "user"
Changes to API and GUI

Added lstavailablepermissions to API

Updated GUI text
Changes to API

Added showversion
Merge pull request #21 from litzi0815/V-0.5.0

Branch V-0.5.0 will be moved to V-0.4.1