Squashed 'moose-core/' changes from 2657e3345..268a28862

268a28862 Merge pull request #224 from upibhalla/master
3ab452e97 Fixed test_nsdf.py. It had relied on the old (and incorrect) function of the spike message to the Table. I have now updated the test_nsdf.py to work with the fixed version of the Table.
616f33a60 Fixed spike timing functionality in Table class. Incorporated into rdesigneur so that tables can record spike times for saving, and users can plot spike times as a dot raster.
7f372b6aa Merge pull request #223 from upibhalla/master
186e91d68 Merge branch 'master' into master
d91a681bf Fix on diffusion scaling in spines, and added Pool::volume field for plotting in rdesigneur.
41c71b147 Merge pull request #221 from upibhalla/master
e27ef8a45 Merge branch 'master' of https://github.com/BhallaLab/moose-core
b07046e15 New Neuron::getSpineIdsFromCompartmentIds function, needed for rdesineur to connect adaptors for spine size and other spine properties.
69d985877 Merge pull request #220 from bhanu1...