create data migration

convert data from a single token into a json object and allow for a downgrade
back to the single token
default config cosmetic changes
default config changes

removed siteinfo config as it is no longer needed
added MOODLE_SERVICES list - a list of services theoc
will be using on each site

refs #97
remove gather_siteinfo, add gather_tokens

gather_tokens will get tokens for various services for moodle sites

refs #97
rewrite the gather command to collect all tokens

refs #97