Services modification according to the testing scenarios

[x] required authentication for service get user by username
[x] required authentication for service upload user profile picture
[x] required authentication for service retrieve user profile picture
[x] required authentication for service set role to user
[ ] change role permissions
[ ] change service filter training by name not to be case sensitive
[ ] change service approve training request to - only logged trainer can approve
[ ] change service approve training request to - if logged trainer id is not = trainer Id from request -> forbidden
[ ] change service cancel training request to - only logged trainer can cancel
[ ] change service cancel training request to - if logged trainer id is not = trainer Id from request -> forbidden
[ ] change service complete training request to - return message
- [ ] change service complete training request to - logged trainer/user can complete
- [ ] change service complete training request to - if logged trainer id is not = trainer Id from request -> forbidden

emiovska / training-evaluation-platform