Created org.dawnsci.plotting.api because
1. API had unwanted features creeping into it
2. API had draw2d creeping into it
3. A separate plugin will be donated to eclipse project.
Merge branch 'master' of git@github.com:DawnScience/dawn-ui.git

Conflicts:
	org.dawnsci.plotting/src/org/dawnsci/plotting/tools/fitting/FittedFunctions.java