…ameter.

…el set sector used.

- Add support of local tile origin based on tile matrix set extent instead of full sphere origin.
- Add surface image name based on content identifier.
- Change level set sector initialization based on tile matrix set extent instead of content extent.
- Change first level tile delta and number of levels calculation based on tile matrix zoom levels.
- Fix row calculation in tile factory.

…ng levels size in case of gaps in levels numeration.

…eopackage

# Conflicts:
#	worldwind/src/main/java/gov/nasa/worldwind/layer/mercator/MercatorImageTile.java
#	worldwind/src/main/java/gov/nasa/worldwind/layer/mercator/MercatorSector.java
#	worldwind/src/main/java/gov/nasa/worldwind/layer/mercator/MercatorTiledImageLayer.java
#	worldwind/src/main/java/gov/nasa/worldwind/render/ImageRetriever.java
#	worldwind/src/main/java/gov/nasa/worldwind/render/ImageSource.java

…ort.

…eopackage