Updated session management a bit -- we need to hammer out what we will be doing with sessions

Added ability to remove baseline on buttonclick
trying to refactor sessions - holy b'jeezus is it a mess
Merge pull request #156 from jread-usgs/master

New stats added to R package
Merge pull request #157 from jread-usgs/master

Optimized R code, added local file run logic for testing
modified objects to facilitate bsaeline distance calculation
Merge remote-tracking branch 'usgs-cida/master'
Merge pull request #158 from tkunicki-usgs/master

modified objects to facilitate bsaeline distance calculation
Merge remote-tracking branch 'upstream/master'
Session clearing functionality moved to the sessions object
Changed session accessor methods to more closely match their functionality

Removed the session object from the UI object for now
Merge pull request #159 from jread-usgs/master

fixed the NSM object error (??) and set code for WPS run.
Sessions working for shorelines - major refactor incoming
Baseline functionality properly working
Merge remote-tracking branch 'upstream/master'
Most of the functionality that was functioning previous to refactor is working again - transect editing still needs work
Merge pull request #160 from isuftin/master

Session object refactoring - code cleanup needs to happen now
Fixed an issue with WMS caching layers even when resource has changes on OWS server. This affected shorelines and intersections
Fix for on-error during init - modal window was never appended to the body in order to show to the client
Made session clearing during on-init error more respectful of possible other session objects we probably shouldn't be deleting
Did a once-over to ensure any request to the session object is using it correctly