Note docs on geoserver auth; also some typos
Merge pull request #1691 from jean/master

Note docs on geoserver auth; also some typos
Modify wording of index.txt

Very minor modifications to the english-language wording of the developer tutorial's index.txt text content.
Merge pull request #1693 from joebocop/patch-1

Modify wording of index.txt
Merge pull request #1689 from simod/master

use anonymous group to manage anonymous permissions, fixes permissions f...
distance profile resources count. Fixes #1651