Fix for ESC -> meta in terminal mode.

If you hit esc-key in terminal mode very quickly, it gets interpreted
as meta-key, which makes evil-mode unusable in terminal mode. The
default value of 0.01 doesn't completely fix this behavior, but
setting it to 0 does. The meta key still works fine with it at 0.
Fix editing remote unwriteable file

With the original advice, if we try to find a not writeable file on a
remote machine, the extra tramp prefix would be inserted. As a result,
we actually end up in a blank new file.
Merge pull request #627 from toctan/sudo-tramp

Fix editing remote unwriteable file
A better `prelude-view-url`

- remove HTTP headers, what we care most of the time is the content
- `set-auto-mode` is way better than the naive xml, html tag check
Update README
Merge pull request #628 from toctan/view-url

A better `prelude-view-url`
added (interactive-haskell-mode) to enable the use of interactive haskell commands (such as C-c C-l to load file)
Merge pull request #630 from mijoharas/master

added (interactive-haskell-mode)
Merge pull request #613 from roryk/upstream

fix for evil-mode in terminal
Merge remote-tracking branch 'upstream/master'