Allow month and year inputs to load in preset ranges

[kalepail]

For example a string of August would load August 1, [current year] - August 31, [current year]
August 2013 would load the same preset range but for 2013
2014 would load January 1, 2014 - December 31, 2014

Caveats

• Only within preset limits.. otherwise confine to bounds (i.e. this.earliest_date or this.latest_date)