See extended description

Reworked Customer
- added customer orders
- added additional comments
- added nutrition habits
- added sport preferences
- added fitness targets

added Order model
added Exercise media upload
changed FitPoints to products
added product media upload
Added video reports, changed image to file

Added video reports
Refactored class methods in category
Changed medium image to medium file in all corresponding files
Removed bodyparts, fitnesslevels and eating habits from navigation
Removed bodyparts, eatinghabits and fitnesslevels from dashboard