Adds base cache module and class #17
Adds most of archive methods and invoke archive tasks #18
delete MD archive module #18
remove s3 module
initial ohio mappings file
add slugify function
oh datasource work
added url paths csv for ohio
add partial work on updated models
add slugify function in text.py module
add property for absolute path to to state cache dir
more partial work on models
added to url_paths.csv
finished url_paths.csv
cleaning up
default to race-wide
updated url paths for multiple office files
first complete version of OH datasource
updated OH filenames
cleaned up