Making app alive again.

[Hassan-Elseoudy]

What has been changed.

• A New file for Api Messages (to be changeable later).
• Linking roles with indexes in a map, ease of editing from one place.
• I also didn't want to break your algorithm searching for names, so I added a new extractRoleName.
  I tried to link your original strings with the new Enums.

example:
input(ROLE_TRIAL_SUPERVISOR) -> will return(Trial Supervisor)
input(ROLE_PUBLIC_SECTOR) -> will return(Public Sector)

:) Ping me if you needed any edits and have a nice night.

IMO, you need to use Visitor Design pattern for specifying roles.

[iamysko]

Just reviewed all changes. Great work!!