refactor and rename config variable in SynFind

Use the _CONFIG_PATH member rather than constructing the configuration
path.

	modified:   web/GenomeInfo.pl
refactor run_dotplot to use web init

	modified:   web/run_dotplot.pl
remove old version of SynMap

	deleted:    SynMap_old.pl
	deleted:    run_dotplot_old.pl
	deleted:    tmpl/SynMap_old.tmpl
add request timeout for run_dotplot

	modified:   SynMap.pl