Show dismiss posts/topics buttons on category filtered lists
FIX: Make shortcut 'c' global for creating a topic

https://meta.discourse.org/t/keyboard-shortcut-c-create-a-new-topic-does-not-work-globally/18975
Apply comments from eviltrout, using this.get('category.id'), and use snake case for category_id
Call open directly to avoid deprecation warning
BUG: phpBB lists not properly converted

bbcode-to-md happily ignores all phpBB's lists. The list syntax is
    [list][*]item 1
    [*]item 2
    [/list]
and 
    [list=1][*]item 1
    [*]item 2
    [/list]
respectively for [ul] and [ol]s. Luckily, phpBB adds closing tags for [*] items. My workaround simply converts phpBBs lists into bbcode using [ul] and [ol] which then can be converted by the standard bbcode-to-md code.
Use a site setting for maximum summary results
Merge pull request #2930 from techAPJ/patch-2

optimize detecting avatar image logic
FIX: prevent iframe in expended quote
update wrench button info
UX: make the blue notification float over the column headers on desktop
UX: show the hide revision button on mobile
Merge pull request #2926 from mcwumbly/hide-revision-button

UX: show the hide revision button on mobile
FIX: cannot show email for pending/inactive users
comment to explain a bug
Revert "REVERT commits for raw handlebars rendering. We need to create a"

This reverts commit a4363e033d70bdd08f173c2cd8a44a8b520088c4.
PERF: use raw rendering for topic list

rename my handlebars helper to "raw",
create ember compat handlebars to handle rendering
patch ember rails to use the correct precompiler
one more spot where code can be reused
PERF: move excerpt to raw, expose i18n to handlebars
PERF: reduce one view, cleaner pattern for component visibility
PERF: don't render dropdowns till we need them