adding lines under filters.new

adding filters.new.lower_title_with_count and lower_title
Bugfix: Keep import path and context for plugin scss imports

 - instead of concating all files into one gigantic file reuse the importer
 - and that way keep the context for relative paths in plugin scss
Changes to posts template to make it easier to display posts on top.
BUGFIX: adjust page padding when composer view open

From https://meta.discourse.org/t/discourse-general-polish/13184 :

"Footer padding gets out of sync: start typing a new topic in the composer ... size it big ... got to random topic ... footer padding is not added so you can not see the last post on topic. (workaround, resize composer once more so footer padding is added). This need to be added everywhere automatically. Including admin screens."
Merge pull request #2254 from bradx3/fix_composer_padding

BUGFIX: adjust page padding when composer view open
Merge pull request #2250 from ligthyear/fix-plugin-scss-import-path

Bugfix: Keep import path and context for plugin's scss imports
Merge pull request #2232 from vikhyat/username-on-top-setting

Add option to show username on top of posts instead of the left gutter
FEATURE: lock icon for archived topics

remove model sniffing hack
update zh_CN translation
Show badges in the poster expansion card.
Fix badge serialization issue.
Only @import plugin scss. Fixes the huge emoji issue.
Merge pull request #2255 from vikhyat/fix-sass-plugin-import

Only @import plugin scss. Fixes the huge emoji issue.
Switch the awkward poll.post.poll_details.closed to poll.closed.
Remove the colon from the poll prefix, drop regex support.

This is needed to make it possible to programmatically toggle between
open and closed polls.
Update poll when title is changed.
Merge pull request #2256 from vikhyat/poll-plugin

Poll plugin updates
Poll style improvements.
Merge pull request #2251 from fantasticfears/locale

update zh_CN translation
Remove topic.notifications.title translation key since it's always an empty string