Added support for coordinatate systems that go from 0-360
instead of -180 to 180.
It remains to be seen how generally robust this is though.
Fixes JIRA 213.

Added a check for empty folders instead of just
file size == 0 in the check for good previous runs
Fixes JIRA 215.

User named inputs that don't follow SAHM
naming conventions no longer break a workflow
Minor changes to check before overwriting files