night icon change

Moon image is now flopped.
.travis.yml: remove bleadperl

On the travis-ci machines, perl 5.19 is 5.19.0, which is quite old.
Current bleadperl version is 5.19.6.

See also https://github.com/travis-ci/travis-ci/issues/1751
regenerate cgi/GNUmakefile from Makefile
new fixin-shebangs target
bbbike-cvrsnica.cgi.config: better way to get BBBIKE_ROOTDIR

FindBin depends on calling script, which may be wrong (e.g. if
configuration was loaded from a t/*.t script)
activate t/mapserver.t on cvrsnica

The old biokovo/vran special cases were removed. The setup on cvrsnica
does not need any special deploy targets, so the SKIP was removed.
activate cgi-validator.t on cvrsnica
bbbike.psgi: mount /cgi-bin/mapserv
bbbikegooglemap.t: set $Test::Builder::Level
bbbikegooglemap.t: better diagnostics
new test targets for psgi

New targets in t/Makefile are test-psgi and prove-psgi.
bbbike.psgi: fix symlinked CGIs

Aliases like bbbike2.cgi must be accessed via the symlink, not the
symlink target, otherwise using the correct configuration does not
work.
bbbike.psgi: use Plack::Middleware::Rewrite for /

So only / is redirected to bbbike.cgi, and any invalid URL is now
realy a 404.
missing declaration of using_bbbike_test_data
BBBikeApacheSessionCountedHandler is a TODO test on travis
psgi: handle /bbbike URLs correctly
another file for CGI_TEST_FILES
BBBikeTest: new function on_author_system
m-bbbike-de.t is now run only on author systems
comprehensive list of CGI_TEST_FILES

Collected by grepping for occurrences of "check_cgi_testing".