* do not uncache status / emoji media if attached status is bookmarked
* add status bookmark and bookmark IDs caches
* update status bookmark tests
* move IsStatusBookmarkedBy() to StatusBookmark{} interface, rely on cache
* fix envparsing.sh test
* update media / emoji cleaner funcs to use new paging package, check for same returned maxID
* fix other calls of getattachments and getmojis not using paging
* use alternative order-by function