Add more generality in hydromap location when loading discharge file.
This fixes issue #82
Merge pull request #85 from billbindi/master

Add more generality in hydromap file location
Merge pull request #88 from eparsons/master

Changes needed to compile as a QT5 project
Modifying file locations in non-gui version to match new expected location.
Merge branch 'master' of github.com:eparsons/USGS2012