cgi/g: Add some cmdline support
cgi/g: fix the SQL query
cgi/g: adding paletted color
cgi/g: adding the legend
cgi/g: do not ask any CGI import

Perl 5.20 doesn't import the CGI function, so they have to be explicit.
If using an older Perl version, it complains with function redefinition.
dev_scripts: handle QUERY_STRING in CGI
cgi/g: no need to escape the .label

It is passed via system(@ARGS) anyway
cgi/g: emit some real output
cgi/g: adding watermark
cgi/g: Adding title
cgi/g: Setting --start and --end
cgi/g: logging some timings
cgi/g: handling field.draw
cgi/g: Emit the offending path_info
cgi/g: adding some values as legends
node: if only one node, always select that one

Usually where only one node is configured (no virtual nodes), we don't
want to bother the user with needing to configure the exact hostname.

So, this enables to "Just do what the user wants, not what he says"
m/update: avoid "uninitialized value $ds_type"
cgi/g: remove unused @times constant
cgi/g: adding the "hour" timing
whitefix