added view of previous tests run and test rerun functionality, will reuse Finesse build if available and just process the kats

watcher thread now start the test thread when ready, stops the watcher trying to join the test thread before it is ready

More changes on how it all works. kat.run() now returns a runkat object which contain all the varios information like timestamps, data, headers, version. Gui now has spaces connecting components up. Also added 'Export to SVG' option which is nice, however the SVG renderer mucks up the gradients on the components