Rename image features without abbreviation

Consistency is good
Remove global expansion/preloading

Killin' features like I'm a gnome 3 dev...

The uses for preloading/expansion are too small to warrant their extra ui all the time.

Inline-expansion for images now cycles to 100% from fit-width if the
image is wider than the page, which is pretty okay in almost all cases.

Would be still nice to have a 'manga dump' mode, but I'm not sure how
the UI would best look. Likebox-style left-right to images that match
the same user/size/regex pattern on filename? It would be a lot code for
a tiny feature though.
Compact image-expansion code
Emit postinsert on ready, and add helper fn for features

Used by image-expansion, need to make other features use it
Compact highlight code

Oh yeah, I've almost made up the line gain from the helper itself
Compact image-previews.co

I am become queue, destroyer of readability
Mildly compact inline-replies

Shit is way ugly. Need to factor dat code
Mildly compact postpreviews
Compact quote.co
Fix ready event not firing

Had to change around youtube to not over-request with the initial flood
of postinserts.
Merge branch 'imging'
Remove footer and sticky footer

I just can't stop removing things!

Also removed 'return' and top/bottom links, on the basis that
I personally don't need them. Everything must go!