Migrate more helpers to ES6 format.
Better resolver support for underscored templates. Eventually we'll
migrate to dashed only.
Use dashed names for all templates when using `{{render}}` for future
Ember compatibility
stripping port information from Discourse.BaseUrl

Port information if presented in Discourse.BaseUrl may break user avatar URL in the template generation.

https://github.com/discourse/discourse/edit/master/app/assets/javascripts/discourse/models/user.js
avatarTemplate()

In the future there should be a way to reference baseUrl with or without port information
Removed stupid `{{log}}` message that I left in because I'm stupid.
Merge pull request #2791 from lidlanca/patch-1

stripping port information from Discourse.BaseUrl
Rename elder to leader
move pre/kbd to base css, remove obscure CSS
shorten keyboard shortcut help copy
Merge pull request #2793 from techAPJ/patch-2

Rename elder to leader
UX: rename "invisible" to "unlisted"