Remove machine-specific plugin path

On a different machine this would result in a build error
"bad option: -P:continuations:enable"
see bug #1000700 in ScalaIDE for ref.
Make app debuggable.
Fix duplicate menu entries.
Use activity title instead of another space wasting header.
Updated IDE config files. UPSTREAM?
Put config files in gitignore. UPSTREAM?
Improve layout for small devices (reduce margins, ..)
Remove unused variable.
Raw visualization pimpin.
Purely experimental.
Kill settings. Will it still work?