[Front] Admin page

[MatthewDlr]

• [x] Create new module
• [x] Create a wallet within a module
• [ ] Edit competencies and sub-competencies of a wallet
• [x] Manage teachers permissions

[ghislaindemael]

Front for task 1 is done : Needing the link to DB

[ghislaindemael]

Added the possibility to select a module manager.

• [ ] Make the link to DB to save module state
• [ ] Restrict edition for appropriate roles