Update Eclipse settings
Remove Eclipse project files

Since everytime Gradle gets run, they change, there's not much
convenience in putting them in the repo now.

Order to execute for generating Eclipse project files:
	gradle build
	gradle eclipse
Question text and formula now parsed.

The BlackboardParser now returns a list of Questions with the text and
formula filled in. XML parsing is done using the XOM library
(www.xom.nu).

It's hard coded traversal through the XML tree for simplicity, not sure
how much variation is possible with these export files yet.