GSoC with OpenMRS week 11

Hello World! The intern has almost come to an end and this was the most productive week until now. To start with I made a note of what kind of test cases I would be writing for the controllers, later on I wrote stub for a few controllers and tried to use mockito on a sample code. I have planned to finish all the test by this friday and then finally write the documentation over the weekend. Finally later on in the week I added some required error handling in some controllers which would otherwise hamper the user experience with the endpoints. Thats all for the update. Thanks for reading.