Recurrent Transactions

I have gone back to my route deliveries plugin to add some more features I desired but didn't have the time for. I've pretty much finished up the next update. just going through the cleanup and documentation part.

One major feature is recurrent transactions. The old core RTX left much to be desired. I think my UI flow is much more logical, it has support for deliveries and invoices, and support for "by day" (every 2 months on the 4th Thursday / weekly on Mon, Tues, Fri). You don't need to mark a template for RTX, you just select the customer and branch, then a sales order list ordered by date comes up. Select one, and there is a pager link to verify. AJAX handles the form to show correct options based on selections.

I think this is something core should have, but it works on a new table structure. I purposely recreated one to be as compatible with the CalDAV format (stripped down) as possible to allow importing events (possible now) and for cal apps to read events (not available yet).

Anyways, is this something you are interested in? @joe @apmuthu, do you want me to make a branch of core, implement it, and maybe make a conversion/copy script from the old table to the new? Or do you want to wait for the module GitHub push update to try it and give the OK before I bother with it?