Merge pull request #76 from itewk/master

JBIDE-17476: Add extension point to add additional addon repositories to Furnace runtime
JBIDE-17476: Add classloader composition to address proxy type resolution from extension points/consuming eclipse plugins.
Improve docs.
rename F2Console to AeshConsole
rename CommandExecutionListenerImpl to CommandLineListener
rename ForgeConsoleImpl into F1Console
rename ForgeConsoleImpl into F2Console
move F1Console and F2Console to org.jboss.tools.forge.ui.internal.console