coding uploads

Forgot to sync with github.  Most have minor corrections that have been
made to them
Working code

Code for launch.  Small changes still need to be made.  Strings changes
to reflect HAB name.
Change from fahrenheit to celsius

ExtTemp outputted it's value in fahrenheit.  Changed to celsius.
Corrected ExtTemp + NoGPS string format

ExTemp was not supplying correct vale in celsius.  This was corrected.

NoGPS String re-organised to be more logical.
GPS Data string updated

Re-organised the GPS datastring to easier to understand
Correction to GPS String

Corrected GPS string to account for ExtTemp being a string not an int.
Updates to RTSHAB01A

Changed altitude int to long so as not to overflow buffer
Changed datastring to incorporate more $$ to prevent dataloss
Changed ExtTemp sensor dtostr width to -4 to stop extra spaces being
sent
Changed ExtTemp calculation as the temp was double the amount out.