Re-enable caching on search.
Handle views that don't support search gracefully

This includes all key/value formatted views, e.g. the image view. We
need to support these ultimately, but no time before the next release.
Merge branch 'master' of ssh.github.com:cortesi/mitmproxy
PyInstaller bug requiring a console import in mitmdump is gone
Optionally take the mitmproxy path for doc rendering from a env variable.
Tweak setup.py to allow installs outside source dir

Also fix mitmdump version output
Refactor docs to define nav sidebar in only one place.
Doc and readme tweaks.
Release test script and checklist.
Silence pyflakes

And pick up one bug as a consequence.
Add note on emulated android devices. refs #204
Move the doc tree out into its own repo.
Merge branch 'master' of ssh.github.com:cortesi/mitmproxy

Conflicts:
	doc-src/certinstall/android.html
travis: install netlib from git before installing requirements.
merge master