Merge pull request #6 from albertsaave/master

Implement update of name and description for programs
Merge pull request #7 from albertsaave/master

Add tests for update drugs and fix fields concept bug
Merge pull request #8 from albertsaave/master

add implemantion to update drugs routes
Cleaned up some of the test methods to make tests more readable.
Merge pull request #9 from staritza/master

Cleaned up some of the test methods to make tests more readable.
[AS] add functionality to update dosageform concepts for drugs