Allow for Configurable Archive Period

[tybritten]

For #38. Adds a config item called ArchiveLength that defaults to 90 days.
Tests are updated, but still need to add tests specifically for changing the period

[tybritten]

Ok, added tests for ArchiveLength

[tybritten]

We're gonna run this on our side first, but I'd love some eyes on the changes I made to see if anything is wrong

[nicpottier]

Forgot we had thought about making that an org level item one day, so that was easy!

Do let us know how it works out.

[tybritten]

so far, so good. It seems to be handling in-use objects gracefully level=warning msg="unable to delete broadcast, has messages still" broadcast_id=15552384 msg_count=1 org_id=1

[tybritten]

Ok it completed all its runs and it worked exactly as expected. We used a period of 30 days and it worked fine.

[tybritten]

Just an update- still working fine as expected

[nicpottier]

Great, thanks, we'll merge in.

[nicpottier]

Actually just realized that maybe ArchiveLength may not be the best name for this. How do you feel about having that be named RetentionPeriod which feels more right? (I can make the change)

[tybritten]

I agree with that.