cubicweb #6893247 TWStartHandler clears uicache [done]

before starting we rm uicache/*, which means if another process shares this cache (e.g. because the instance is already running, or because there's multiple processes, or because we've been started in error, or ...) we'll break them. See also #6893185.

prioritynormal
typebug
done in<not specified>
load0.500
load left0.000
closed by#c96d67251a9d [etwist] remove no-longer-necessary uicache cleaning
patch[etwist] remove no-longer-necessary uicache cleaning [applied]