Import Geolocation API Test Suite

http://dev.w3.org/geo/api/test-suite/test-suite.zip

- update test-suite.zip link to the above in Overview.html
- remove zip.sh

TODO: convert the tests to testharness.js tests
Remove tests covered by geo IDL tests in #348
Rewrite other geo tests using testharness.js as

- *_permission_allow* need location access allowed
- *_permission_deny* need location access denied
- the rest don't need location access permission granted
Update tests to reflect geoapi-errata

http://www.w3.org/2008/geolocation/geoapi-errata.html
Merge pull request #349 from zqzhang/submission/zqzhang/geo-test-suite

Import Geolocation API Test Suite
Merge branch 'master' of https://github.com/w3c/web-platform-tests
remove createSR wrapper of createShadowRoot