Add `method="post"` back to forms
Add `.will-change` and small tweak for new buttons
Implement autoprefixer and small style tweaks for auth form
Clean up signup client-side JS
Also reset `hadContent` on inputs for signup form
Fix prepopulated floating-label inputs
Update Gitignore
Add Teamspeak Client ID to User Model
Design and structure updates
Add teamspeak parameters to config
Merge branch 'juri-brunch' of https://github.com/gamekeller/next into juri-brunch