Lets do some beta testing !

Main features :
- Built-in tab indented text builder
- Category tree viewer
- Import/export your category tree by text, csv, json file
- Category uid persistence (move category without losing uids)

Roadmap :
- toggle deleted categories view
- typoscript settings
- folders handling
- pid root for categories
- assuring quality (error handling, code optimisation, ...)
- realtime javascript tree