feat(server) add ability to configure multiple cron tasks and specify which branches should be excluded or included during deletion.

[MrFlashAccount]

Sometimes it would be extremely helpful to have some additional configuration options to describe logic, like:
I want to keep master builds for a year and all other branches for a short period of time

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[MrFlashAccount]

@googlebot I signed it!

[patrickhulce]

thanks for the contribution @MrFlashAccount! I think this is great 👍

[patrickhulce]

is there a middle ground between my suggestion and what you have here? :)

I don't feel very strongly about my text, but definitely the context for deleteOldBuilds and using index instead of index + 1 is important IMO.

[patrickhulce]

friendly ping, I'd love to get this merged for the imminent release

[MrFlashAccount]

Yea, I got what you mean. I didn't think about that 👍 replaced index + 1 with index

[MrFlashAccount]

@patrickhulce Maybe it's better to squash all these three commits? What do think?

[patrickhulce]

I squashed on merge, thanks again @MrFlashAccount! :)