More about usability testing #82
Closes #92

* Explained why we chose RUP as process model
* Created labels in chapter Prestudy
* Wrote one sentence about which lean principles we adopted particulary
Merge branch 'iss92'
#88 Renamed "Usage of workhours" to "Group interaction". Wrote about group meetings
added division of labor for #93
wrote test result and added some requirements
merge conflict
Closes #95, closes #90

* Added new use case for connecting with BT device from device list
* Added use case to requirements chapter
* Added reference to use cases in iterations
* Small changes and rewriting of iterations
Merge branch 'iss90-iterations'
closes #88 rewrote group interaction
Merge branch 'issue88'
#97 Added skeleton for abstract
Fix minor mistakes in Division of labour #93
#97 Started writing on the abstract
Make minor changes to abstract. Not complete. #97
added decision of design and requirement #87
#82, #81. Small editions to the testing chapter. Started work on introduciton.
trying to fix ?? reference
#97 Wrote more on the abstrac
no changes