Change use of parsePaths in CAH visualize to reflect changes in output of method

The makePlots method in visualize.py makes use of the parsePaths method in order to import tags that are specific to the distribution which is currently being plotted. This MR will fix the issues related to how the new output of parsePaths is handled here (see !181 (merged) for how the output of parsePaths changed)

In the end, due to python not knowing what to do with the new PathTerm struct, the workaround was to create a wrapper method to parsePaths which only returns the strings of the PathTerm objects and to use this in the visualize module.

resolves #79 (closed)