Document custom controls
Use goog.dom.classlist functions

The goog.dom.classes functions have now been deprecated.  See https://github.com/google/closure-library/commit/97e8a0c0fc7238a56cc4dacd4a96fd4c0735b992
Export ol.source.Vector.clear()
Merge pull request #2285 from tsauerwein/vector-source-clear

Export ol.source.Vector.clear()
Export ol.format.GeoJSON.writeGeometry()
Improve docs for define tag
Mark the color argument to ol.color.transform non-nullable

Inside this function goog.vec.Mat4.multVec3 is called and and its
arguments must not be null.
Merge pull request #2287 from tsauerwein/geojson-write-geometry

Export ol.format.GeoJSON.writeGeometry()
Merge pull request #2284 from tschaub/classes

Use `goog.dom.classlist` functions instead of the deprecated `goog.dom.classes` functions.
Merge pull request #2288 from fredj/latest-closure-library

Mark the color argument to ol.color.transform non-nullable
Merge pull request #2286 from probins/defines

Improve docs for define tag
Merge pull request #2278 from probins/control

Document custom controls
Remove the IE 11 fullscreen externs declarations

They are defined in recent versions of Closure Compiler.
Use build.js for ol.js
Use build.js for ol-simple.js
Use build.js for ol-whitespace.js
Use build.js for ol-all.js
Use serve.js instead of the Plovr server
Add jquery-1.7 externs
Fix a type issue in jquery-1.7 externs

See https://github.com/google/closure-compiler/issues/176