static API documentation

[nuest]

Create a static HTML file src/main/webapp/api.xhtml for the documentation of the API - all swagger code was removed, but the annotations are still there, so search the code for @Api, @ ApiParam, @ApiResponse and @ApiOperation to find the relevant information, then complement with contents from http://www.geolabel.net/api.html

[nuest]

Or maybe briefly try out http://www.miredot.com/