SECURITY: Limit passwords to 200 characters

Prevents layer 8 attack.
SECURITY: Malformed URL could crash V8
FIX: Scroll position when hitting back button to category filter
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
Fix: Cancel link click if triggered as part of text selection

Prevent a click if the user select content in a topic and release the mouse over a link.

https://meta.discourse.org/t/selecting-a-link-results-in-it-being-opened/14846
UX: rename "invisible" to "unlisted"
return true when invoke verbose_localization_session
Fix: rapid/continuous keyboard Next event under Topics List view may lose selected item on "load more"

Using Next keyboard shortcut (J) rapidly while reaching last item in the topic list and
causing a "load more". The handler might get into a state where it can not detect any selected item due to the delay from Em.run.next
and will result in position reset.

+added boundary check of last item on next, early in the handler to avoid unnecessary computations 


https://meta.discourse.org/t/keyboard-shortcut-next-previous-continues-key-down-reset-to-first-item-in-list-on-load-more/20042
consolidate <aside> quote CSS styles in base
Add pl_PL translations for Poll plugin and update translations
FIX: Bracked category link in no-JS view