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
updated spanish translation

still there are a ton of things to do
Jump to First Post instead of Reloading Topic
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
Update the members of the Core Discourse Team
FIX: Remove update, should fix issue with broken specs
add option to override user attributes from SSO payload

add an external_username attribute for username from SSO payload

repair the field name in SingleSignOnRecord migration

move setting of external_username for sso to controller

add settings toggle to override username/email from SSO payload

fix changing of external username after override toggle

complete tests and logic for sso override

add some extra context to username override option

add external_email and external_name to single sign on record

add setting for name override from SSO payload

complete override with stored external_email and external_name

add missing checks to tests

remove an unneeded describe block

break up a monster method for single sign on

fixes for sso attribute override after failed tests
Change email token expiry to 24 hours instead of 1 week
TRIVIAL: Change some variables to `self`
When links have thousands of clicks, display them like 3.3K
Add plugin specs to travis.
You can only reuse email tokens within 24 hours.
massive update to admin quick start guide