Add test for array equality

Hilariously, expect.js does not have one.
Don't use goog.array in ol.Collection tests
Merge pull request #368 from twpayne/equalarray

Add array value equality test
Add wmts-capabilities example
Use correct namespaceURI for WGS84BoundingBox reader

(closes #356)
Add new equivalent projections

for both EPSG:4326 and EPSG:3857.
Fix wmts-capabilities example

the parsing of the wmts getCapabilities document require proj4js.

Also initialize common ol3 projections with ol.projection.addCommonProjections
so that it won't try to get EPSG:3857 from proj4js.
Merge branch 'fix-missing-requires' into issue-356