Requirements check-list

Checklist of requirements:
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Sect. 3.3:
1) - Range of dates not implemented yet
   - No access rights for OBs implemented yet (password protection)

2) Colour scheme fot OB statuses not implemented yet
    Proposal: yellow D/+ (light/dark)
              green C
              cyan M/A (dark/light)
              red F/K (light/dark)
              white S

3) Can only be decided when colour scheme is implemented

4) OK

5) Not implemented yet

6) a) filter on OB level not implemented yet
   b) no slider needed for DITxNDIT, but the total exposure time per filter
       should be displayed.
   c) OK
   d) OK
   e) not implemented yet
   f) not implemented yet
   g) OK
   h) OK
   i) OK

7) Not implemented yet
8) Not implemented yet
9) Not implemented yet