some improvements to the distribution ranges on the histograms
Merge branch 'develop' of https://github.com/agile-geoscience/modelr into develop

merging after fixing some distribution plots.
fixed too-wide-plot for one-panel case
added vertical exaggeration parameter to util and defaults, to replace the aspect ratio for plot scaling
fixed vertical exaggeration (working)
changed name of of vert_exag to aspect ratio
change default on aspect ratio
mergeMerge branch 'develop' of https://github.com/agile-geoscience/modelr
merge with master
Merge branch 'master' of https://github.com/agile-geoscience/modelr into develop
fixed bug with zero std
fixed bug with reflectivity with freq and offset plots
added aspect ratio
cleaning up tempfiles
cleaning up tempfiles
improved distribution plot scaling
merged stochastic_avo.py small change
fixed typos
mergedMerge branch 'develop' of https://github.com/agile-geoscience/modelr into develop
new branch for beta release
fixed scripts to work with web app defaults