Add scan counter TextView

* Allows for easily keeping track of the sample size for a given cell.
Add button to easily increment the X coordinate

* Useful when moving from one cell to the next when measuring RSSIs
Disable the Clear Data button

* Prevents accidental gathered data removal
Reset coordinates on Clear Data
Keep track of measurements in a static field
No more continual measuring

* Stop the continuality since it threw off the sample sizes when measuring
Teach Measurement to self-represent as a String