Fix typos in documentation and code.
The feature diff web op now operates on any treeish.

It previously only worked with Commit IDs.
The commit web api response now includes the commit ID.
Allow the repo list to be returned in JSON format.
Return EPSG codes for geometry instead of regular WKT name.
Added more functionality to the web log operation.

You can now return a commit range which includes the first
and last commit, as well as the count.
You can also specify whether or not to include a summary
of each commit.
Added web version of rebuild-graph.
Added a web command to revert changes from a single feature.
Added a web version of the blame operation.
Added basic authentication for http remotes.
Added a verbose and update option to remote web api
added parameter in geogit-gateway to specify port to use
added man page for osm apply-diff command
removed check for conflicts in CommitOp.

It is now controlled by the interceptor
Merge pull request #621 from volaya/conmmit_conflict

removed check for conflicts in CommitOp.
Merge pull request #620 from volaya/gateway_port

added parameter in geogit-gateway to specify port to use
Merge pull request #617 from jdgarrett/revert-feature

Add a web command to revert changes from a single feature
Add getTempDir() method to org.geogit.api.Platform
Merge pull request #615 from jdgarrett/web-log

Add more functionality to the web log operation
Merge pull request #612 from jdgarrett/web-api-improvements

Various Web API Improvements