dry up and modularize layouts
add header to sign up page
Merge pull request #4036 from pestrada/4030-resize-textarea-after-commenting

reset comment box height after posting a comment
Show timestamp when hovering on comment time-ago string. Closes #4042
Merge pull request #4046 from embs/feature/4042-show-timestamp-on-comment-hover

Show timestamp when hovering on comment time-ago string. Closes #4042
Merge pull request #3944 from MrZYX/modular_layouts

Modular layouts
zsh doesn't find custom source files otherwise ... [ci skip]
Merge branch 'develop' of https://github.com/diaspora/diaspora into develop