* remove cache, switch to go-pkgz/rest/cache
* remove mongo cache from server test
* remove old caching code
* test tricky disqus inputs
* fix migrator test
* stacktrace dump test
* import with two-stages, wait api and prevnts double run for the same site #231
* lint: missing err check on tmp import file removal
* catch SIQQUIT
* add imprter comments
* add new import apis to spec
* add test for form import
* timeout for import wait api
* lint: uncecked errs
* add le support
* fix log info
* change readme for autocert mode
* rename acme location param
* add test for http challenge
* add acme-email param
* do tls config more sane
* add notify service with no destinations
* change to request for destinations
* add telegram notify and wire to main
* lint: missed err checks
* fix notify factory
* externalize timeout for notify
* fix race in notifier mock
* lint: check notify send status in tests
* lint: write warn
* lint: wrong assignment
* lint: two more writes in tests
* missing notif timeout default
* add bolt implementation of avatar store
* include bolt avatar store in main's test
* change docs with new avatart params
* lint: single line declaration
* separate bucket for avatars metas
* fix comments
* test for bolt params
* closable avatar store
* fix dbl-close
* add admin akd key mongo implementations
* wire admin and key stores to mongo
* lint: wrong comment on keys store
* typos and comments corrections
* fix failed test on avatar resizer
* get rid of ineffectual assignment in test
* add tests for encoding fallback and mongo's keys & admin
* empty encode test adjusted