added DisplayAngles jar and <applet>

adding javadocs

separating css and renaming html
fixing jar structure and html links?
DisplayAngles should work as an applet now that default constructor is present

javadoc for accessors/mutators in DisplayAngles
adding IntelliJ stuff sans workspace
new JS-powered applet_demo page; still needs the new jars
stripped down html to minimum

setting all the <applet> attributes now

properly ignore workspace now