Warning if membership term is not approximately one year.

[maneesha]

This issue introduced a warning if the membership term was not one year long. We'd like to modify this to introduce the warning when it not one year +/- one week, so either <358 days or >372 days long.

Tagging @Talishask as the one who requested this.

[maneesha]

@elichad @pbanaszkiewicz is there any other information needed to implement this feature?

[pbanaszkiewicz]

@maneesha no, it's clear. Please add it to milestone backlog.