Add metrics to GeoQ objects.

[Bauerr]

"1) Average time to complete AOI - by analyst 2) Average time to complete AOI - consolidation of all analysts 3) Generate a statistic that calculates average time per AOI size (ie. Time per acre). So we can evaluate different size AOI for max efficiency. 4) Average time from AOI completion to start QC (how long is AOI waiting to be QC'd) 5) Average time to complete AOI QC once started (how long it takes the QC'er to QC) 6) How long from time project/job was created to the first AOI started 7) Total time to complete Project 8) Total time to complete Job"

[jaycrossler]

Duplicate of #184