ditch storyboard and UISearchBar, make view programmatically

I have to rearrange everything anyway, might as well gain some more
control by making everything from scratch.

Also get rid of bottom toolbar that moves around with scrolling,
it's not perfect and kind of annoying.
restore url bar icon functionality
convert_rules: don't re-process https everywhere rules if git commit is the same
urlblocker: block some analytics found on reddit
add cookie whitelisting with an interface in settings to edit the list

For hosts in the whitelist, don't force the session-only bit on
cookies.

Properly hook up the HTTPS Everywhere secure cookie regexes to only
force the secure bit on matches.