Adjust GPS start time to local time

Closes #114
Display individual score course

Closes #109
Remove try block from API code

Closes #116
Config file changed to .txt

New options added for georeferencing. File extension changed to .txt so
it doesn't overwrite live file. Installation instructions need to say
that you have to rename to .php
User-configured georeferencing

Provide configuration option to define georeferencing scheme
Merge pull request #117 from Maprunner/dev

Various minor enhancements