Merge branch 'master' into #325

Conflicts:
	galsim/utilities.py
	src/SBSersic.cpp
Mrge branch 'master' into #325

Conflicts:
	src/SBSersic.cpp
Fix error from merge
(#325)
merged in salient features from #401
(#325)
moving sersic tests to their own dir, added gitignore
(#325)
added basic comparison script
(#325)
added small sample of 300 COSMOS profile fits to use as basis for tests
(#325)
added basic sersic test modules, need to set running on a big processor
(#325)
Merge branch 'master' into #325
added a small, ideal PSF for the basic test to soften the very sharp peaks
(#325)
pushed sersic range HIGH for purpose of tests
(#325)
added option to change number of objects tested after first trial run
(#325)
upped Sersic limit again just for tests
(#325)
made max_fft_size larger to accommodate failures for high-n drawing
(#325)
fixed error where gsparam config entry needs to be in sub dict
(#325)
moved unnecessary import calls from module scope, added a curt docstring
(#325)
added pkl output file for 30 galaxy trial output
(#325)
made images larger
(#325)
plotting script and plot output
(#325)
merged master into #325, fixed the odd conflict in config due to setOrigin() changes