bbbikegooglemap-selenium.t: new switch -with-jscover
cgi: CORS handling

Additionally allow requests from localhost, e.g. for JSCover tests,
which usually come from http://localhost:8080
bbbikegooglemap-selenium: increased coverage
CORS handling also for mapserver_comment.cgi

Here CORS handling is slightly different, as a "preflighted request"
has to be satisfied (an OPTIONS request before the real POST request).
bbbikegooglemap-selenium: increased coverage, mail comment is sent
bbbikegooglemap.t: removed support for gmap v1 API
data update