override some functions to receive the chest accelerometer data

override some functions to receive the chest accelerometer data
But no Accelerometer is received, so need to be checked later.
ChestAcc
Writing Acc data retrieved from eq02 into local files
Add stop funtion to stop recording the Acc data from chestsensor

add functions to stop the equivitalThread in SenserService and add stop
funtion in the EquivitalRunnable
Add remove listener methods to chest Acc Listener
Send Avg Chest Acc/phone Acc to server
Add pin_number check demo

1. create a new xml to set the view of pin_number check alertdialog
2. wrote the alertdialog demo to do the test
PinTest and disable some logcat
Add uncancelable attr to Suvery onBackPressed

1. Add uncancelable attr to Suvery onBackPressed
2. Remove test code
3. Pin number Activity and loop check mode will be added
Add new Activity and layout files

1. Add Activity to check pin number before triggering the Surveys.
2. Add layout file of the Activity mentioned above.
3. Modify some other config files.
4. Adding intent procession in new Activity needs to be done later.
PIN Number Check tasks are all done/Chest ACC Data Preprocessing

1. Modify New Activity and Layout.
2. Modify Whole Alarm Mechanism.
3. Discard first 11 second chest ACC data after the connection of chest
sensor is established.
4. Still using the Average of 1 second data (25 samples) as output for
now since the outliers are discarded.
5. Disable phone sensor data and APP data uploading to save power.
Merge pull request #2 from MUSensingLab/master

Merge pull request #4 from RickyShi/master
Merge pull request #5 from RickyShi/master

Ricky Weeks of 1/26 and 2/4