Adds Flat Button library
Adds String resources for calculator
Adds drawables to be used to for backgrounds and display
Adds drawables for round buttons,text views and edittexts
Adds xml files for taking adc based sensor details
Modifies code to work with the new xml files added for obtaining adc based sensor details
Removes input and ic range parameters from AdcProc class
Adds menu buttons for navigation in the process of detail filling