Add new env variable WP_STASH_RUNNABLE

[brianvarskonst]

The purpose of this PR is to disable WP Stash with a env variable temporarily, so there is no need to remove this mu plugin.

Add new env variable WP_STASH_RUNNABLE & WpStash Class constants

• Messed up the bootstrap file a little bit and remove dropin file, if WP Stash shouldn't be runnable
• Added new class constants to WpStash Class SCHEDULED_PURGE_HOOK & DEFAULT_DROPIN_PATH

[Biont]

Is there anything wrong with doing it the way that was described in #16? Doing the bypass in object-cache.php sound easier than adding extra logic

[brianvarskonst]

Is there anything wrong with doing it the way that was described in #16? Doing the bypass in object-cache.php sound easier than adding extra logic

Sorry, I don't read this, because I was not thinking someone other also want to do something like this. 😄

Thanks, for the mention, I will to rewrite this as suggested.

[dnaber-de]

I agree with Moritz that it is too much logic to actually completely bypass WPStash. However, I feel sorry that I didn't promote this issue better within the team.

[Biont]

ce6811ee69c5c5310be908a81016296e84a258d2