Move description above annotation to avoid JSDoc warnings
Merge pull request #3047 from tschaub/jsdoc-warnings

Move description above annotation to avoid JSDoc warnings.
Do not quote featureNS and featureType in options
Merge pull request #2699 from bartvde/issue-2699

No need for featureNS and featureType to be quoted
Add new 'ratio' property to ol.source.Vector
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