Testing for 'private_slug' field in events add/edit form

- Testing because the mini event form also uses this initialize method.  The mini event form does not use the private slug field.
Version bump to 5.1.196
More "private slug" updates to the events module
Version bump to 5.1.197
hide recurring_payment checkbox on custom forms if recurring_payment module is not enabled
recurring_payment help_text update
allow anonymous users to donate with recurring payment if an email field is present on the form
add guid as an option of security check for r. p. index page
recurring payment update
add make_recurring_payment_transactions to the run_nightly_commands
File name pattern updated

- Files are allowed to keep their alpha numeric characters, underscores, and dashes in their name.  Their case sensitivity is also maintained
Version bump to 5.1.198
show description on group detail page
Comment out the release date search field on articles.
Added THEMING.md guide for theming. Added THEMING, README, and LICENSE to manifest.in
Adjusted file folder nesting for display on github
Updating THEMING.md to link main sections at top of doc.
add system_generated option to group type
management command to update system_generated group type
data migration to update group type for system_generated groups