Relaxed gps point acceptance criteria

The first 2 points are accepted regardless, and accuracy is ignored for
the first minute of recording.  Afterwards, it must be a value of 19 or
better.
Changed map to locate immediately on creation.

The map was waiting to locate until the first GPS location was recieved.
This was changed to locate immediately upon creation.  It seems to be
using the last known location recorded by the google api./
Code cleanup. No functional change.

Moved strings to resource file, and renamed variables.
Merge pull request #121 from mafiglio/relax_gps_at_start

Relax gps at start