Make help text on options page more concise.
Disable scrolling for `overflow: hidden` elements
Consistent capitalization on the options page.
Merge 'explain-default-options-remove-restore-button'.

Conflicts:
	pages/options.html
Merge pull request #1222 from smblott-github/popup-control-enter-to-save-and-close

Control-Enter in page popup to save and close.
Don't suggest domains which aren't.
Include scheme for domain suggestions; tighter test for valid domain.
Fix domain tests.
Add (initial, basic) isUrl tests (more needed).
Merge branch 'master' of github.com:philc/vimium into smblott
Smooth scrolling, first functional.
Merge branch 'smooth-scrolling' into smblott
Merge pull request #1226 from mrmr1993/noScrollOverflowHidden

Disable scrolling for `overflow: hidden` elements
Prune unnecessary stuff in ensureScrollChange.
Merge branch 'master' into smblott
Smooth scrolling, adjust duration for longer scrolls.
Merge branch 'smooth-scrolling' into smblott
Smooth scrolling.
smooth scroll; fix absolute scrolling of active element.
Order tabs by recency, when no query terms.