Add make reload task
Re-enable `xml` NIF
Remove old, unused files in `apps/ejabberd`
Cleanup `contrib` dir
Cleanup `examples`
Cleanup `tools`
Cleanup `doc`
Change `ejabberdctl` leftovers to `mongooseimctl`, closes #258
Merge pull request #254 from esl/make-reload

Add `make reload` task
Add easy local/global config option fetching
Add ejabberd_auth_http
Fix various bugs in auth_http
Remove to_atoms from auth_http
Add auth_http unit tests
Remove auth_pam leftover
Move SCRAM (de)serialization to `scram` module
Add fusco and meck to deps
Move auth modules config to separate tuple `auth_opts`
Rewrite ejabberd_auth_http
Improve logging in auth_http