updated met2CF.csv;
added test and test input file. Now it handles datetime
fixed tests in PEcAn.DB
updated PEcAn.DB documentation
check version and fix tests

- now check for specific migrations
- fix tests in settings
fixed for geometry in site.lst & convert.input, removed unused dbparms in input.name.check & convert.input
Merge branch 'master' of github.com:PecanProject/pecan