Add xml and json representations for the root list of repositories and /geogig/<repoid>
User interface to manage remote repositories.
Add a 'Remote Security Events' section header in RemotesPage for the remote security logs panel.
Add 'plus' image to the 'Add remote fitler' link in RemotesPage.
Make remote white list blocked error messages more informative
Make NetworkSecurityHook block only if remote doesn't pass any whitelist rule, not the other way around.
Simplify RemoteEditPanel. Ping is on the remotes list.
Get the remotes whitelist UI more inline with standard GeoServer UI style.
Allow CIDR address ranges for whitelist patterns
Merge remote-tracking branch 'upstream/geogig_ui'
add git.properties to .gitignore