more column matching (adding back save to mongo_
more changes for field matching
-Added $.errorFlash jquery call for consistant error flashing.
-Fixed some login css, and had it use the new error flash.
=Created a basic field matching gui (dropdowns).
Merge branch 'field_matching' of git://github.com/jdalphon/rSENSE into uploadModal

Conflicts:
	app/assets/javascripts/experiments.js.coffee
-Added js file for uploadModal that I forgot.
-added redirect back in.
-Field matching works!