Plot: Added default gnuplot cdf key to config
Plot: Added _KEY Flag for custom plots
Plot:  single plot for multiple series + naming

- added single "uncombined" plots for multiple series plotting
- default combined multiple series plots can be enabled via config, are
disabled by default
Plot: enabled default metric value plots
Plot: added _DOMAIN Flag for custom plots

- if this value is set,, all values with no specified domain will have
the new domain instead
Plot: changed custom plot domain delimiter to ~
Plot: updated custom plot configs for ~
Plot: +datafile-functionality to plotdata classes
Plot: fixed bug with new datafile function
Plot: added plotting directly from data

- the setting can be set with "GNUPLOT_DATA_IN_SCRIPT" in the
gnuplot.properties file
- only applies for distributions (no cdf's!) and nodevaluelists
Plot: fixed bug with custom plots
Plot: small format changes on plotconfig.java
Plot: added plotting from data to singleseries-plot
Plot: changed default metric plots in multi series
Plot: changed cdf plotting data gathering behaviour

- data is now written "normally" to cdf files
- gnuplot makes the math to plot cdf plots due to "smooth
cumulative"-parameter in plot script
- added "data-not-in-script" for distribution-cdf plots
Plot: added "data-from-file" to custom dist/nvl plots
Plot: fixed nullpointer-excp. in comb. dist plots
adds custom plots to the config
adds missing break to RandomEdgeExchange abtch generator
adds log level to turn off all log messages