Add bot detection for Facebook crawler

As reported by rubiks with PR #42 on Github.

Add bot detection for Facebook crawler, https://developers.facebook.com/docs/sharing/webmasters/crawler)

New format for GoogleBot Mobile and support for BingBot Mobile

Update controlset to exactly match Google Specifications adn also update devicedetect.vcl to allow for an whitespace after compatible and Googlebot/2.1

Tighten up surface requirements to only apply to ARM-based systems

added seznam.cz - one of the most popular SE in Czech Republic

Added detection for the new Microsoft Surface Devices

Do some link rot cleanup while in here.

Fix X-UA-Device-force cookie

Not required

Change resp.response to resp.reason as this is passed to vcl_synth
Change set of  resp.response to resp.http.response (varnish 4)
Setting resp.status before using resp.reason resets resp.reason to "OK" and results in A-UA-Device-force cooking being set to "OK". Swap ordering to avoid this.

Added detection for the new Microsoft Surface Devices - @see https://msdn.microsoft.com/library/hh920767(v=vs.85).aspx

Update scheme

Minor updates

Update OpenDDR URL

Changed elif to elsif.

I am not a VCL expert but it seems like the 'elif' on line 45 should be 'elsif'.

As requested in issue #19.

Currently only googlebot mobile.

Based on work by "redhat-raptor" on Github.

My Makefile-foo isn't developed enough to figure out how to get TESTS
expanded after the initial vtc file generation has happened.

For now hack around it by splitting into two targets, and run the
generating one manually first.

Make the test set be run from the top level instead, and
add an initial travis-ci.org configuration.

As pointed out by Alex Gonzalez Lacasa.