Changed list comprehension in run_imaging_pipeline to accept _flt.fits input. Made the symlink function in run_cosmicx only run for _c0m.fits input.
Corrected syntax errors and other mistakes. This version of the pipeline appears to be running correctly.
Merge pull request #126 from STScI-Citizen-Science/filename_handling

Merging add_metadata and filename_handling. Ticket #117 can be closed.