Standard mean binning analytic
Add a few important comments to averaging code
refs #8345
Rephrased poorly worded comments.
Merge pull request #22 from oculusinfo/feature/8345

Feature/8345
Merge pull request #21 from nkronenfeld/averages

Standard mean binning analytic
updated documentation:
* tile generation now specifies projection properties
* improved documentation of binning levels
Merge pull request #23 from oculusinfo/docs-autobounds

updated documentation
Merge branch 'develop'

Conflicts:
	tile-client/src/main/webapp/js/layer/client/ClientLayer.js