Fix GoogleMaps example view max zoom levels
Add docs link to loadingstrategy
Restore control’s keyboard navigation
Fixes button handlers event type
Change @class docs tag to @classdesc
Add example combining draw and modify interaction
Export condition singleClick and mouseOnly
Add condition to draw interaction
Remove olx and interfaces from docs sidebar
Add classdesc to gjslint custom tags
Change sourceDir to src/ in generate-info.js

This is to accomodate the case where other directories than "ol" include "api" annotations. For example, the Swisstopo geoadmin folks extend OpenLayers 3 in an ol3 fork, and they have their own "ga" namespace/directory under "src". See https://github.com/geoadmin/ol3/tree/master/src.
Add @classdesc to classes
Merge pull request #2178 from probins/classdesc

Use @classdesc notation.
Remove getSimplifiedGeometry from ol.geom.Circle

The `getSimplifiedGeometry` method is unnecessary as
`ol.geom.SimpleGeometry`'s default implementation is to do the
same thing (return `this`).
Fix typo in comment
Merge pull request #2179 from pagameba/remove-getsimplifiedgeometry

Remove getSimplifiedGeometry from ol.geom.Circle
Merge pull request #2130 from adube/fix-example-gmaps-zooms

Fix GoogleMaps example view max zoom levels
Merge pull request #2168 from tonio/keyboard_controls

Restore control’s keyboard navigation
Merge pull request #2114 from tsauerwein/draw-and-modify

Add example combining draw and modify interaction
Restore synchronized map panning in google-map example