Update client.zh_TW.yml

Change for better Traditional Chinese terms 

Admin > 管理員
Moderator > 版主
Posts > 帖子 (sometimes 發表 as a verb )
Topics > 討論話題 (主題 makes user confused with "Themes" ) 
Catogeries > 分類
Mute > 消音 (阻決 is weird )
poster_expansion will only slide down now.
Typo fix

Just another simple typo fix
Merge pull request #2048 from awesomerobot/master

fixing an issue where a horiztonal scrollbar appears
BUGFIX: recovery code in case an unknown job is scheduled
FEATURE: Add `new_since` column to `UserStat` so we can reset the "New"
date.
FEATURE: Button to reset new
BUGFIX: new date was incorrect
updated spanish translation

still there are a ton of things to do
BUGFIX: Fix ailing tests
TEXT: Change to "Dismiss New"
Jump to First Post instead of Reloading Topic
PERF: speed up css precompilation by caching
PERF: workaround aweful sass compiling perf with HUGE css files
we don't use the term "nickname" use -> "username"
clarify use_https setting
minor improvements to welcome message
add keyboard shortcuts to progress bar tooltips
Don't run plugin gem tests.
Merge pull request #2052 from vikhyat/plugin-tests

Don't run plugin gem tests