Made color for current ROI more visible in selectRoisGui.
selectRois: Arror did not consider nans.
pxCov Speed Improvement

Over 2x speed improvement w/ just parallelizing primary computational
for loop
Added context menu to show traces from an roi

Added a context menu which allows the user to plot the neuropil
subtracted traces for a given roi.

Also broke the plotting from neuropil subtraction into its own function,
plotNeuropilTraces.
plotNeuropilTraces with Matthias' suggestions
Matthias aux fun
Changed directory structure of repository.

There are now three directories: classes, common, and personal. Classes
and common are required to be on the path to use the acquisition2p
object.
Changed directory structure 2 (one file somehow didn't make it into the other commit).
Moved Selmaan's experimental functions to personal
Matthias init fun change.
Merge branch 'master' of https://github.com/HarveyLab/Acquisition2P_class
diag2full moved to common
newDir made compatable with pxCov changes

calcPxCov now stores the filename as a field of the covfile structure,
instead of just having the filename in a covfile field. newDir needed to
be updated accordingly
newDir REALLY compatable

second mod needed to appropriately rename fileName field of covFile
cbDeleteRoi now updates roiLabels.
Default neuropil cluster is now the cluster with the largest bounding box, not the one with the most pixels.
Display existing ROIs in evec images.
displayRoi can now deal with nans (for clicks at edge of overview image).
selectROIs now accept gray and RGB imgs.

The overview image can now be gray or RGB, e.g. to display several color
channels. If the supplied img is in color, the "has been viewed" are
will be a gray outline, rather than a pink area, so that it does not
interfere with the displayed colors.
Fixed bug for calculating neighborhood