Improve forum statistics performance + fix posts count

Build JS

Fix gitignore

Update composer.json (#14)

Change flarum-ext-tags to flarum/tags to fall in line with Beta8 naming sequence.

Beta8 (#13)

* Fix missing AssertPermissionTrait

* Add extend file

* Update package.json

* Replace gulp with webpack

* Remove all gulp files and old package.json

* Gitignore changes

* Fix missing modules and paths

* Remove clutter

* Update composer to beta8

* Move events to extend

* Remove clutter

* Working for beta 8 & fixed a flarum bug in the proccess

* Apply fixes from StyleCI (#12)

* Package.json fix

Fix missing controller bug

Code cleanup

Fix missing controller bug

Change "Statistics" to "Forum Statistics"

Apply fixes from StyleCI