add a simple scale operator to compound vector
delay querying some values unless the tensions have been verified
copy and pasted the subtract command of compoundVectorFactory
Added index command to access numeric properties

Currently used to access x at 0 and y at 1 of a vector, which makes
some actions in cps possible.

This is a quick and dirty implementation, it will be replaced by a
rewrite of the compound*CPSFactory classes
add new Errors: Deprecated and CPSFormula
A new parser for CPS parameter values (inittial commit).

The new parser will clean up a lot of the mess the old
CompoundReal/CompoundVector/AtDictionaryRule system produces
by replacing most of the code by one unified implementation.

Many new and interesting possibilites will be created  by
having the same syntax and methods available in all these
different places. I.e. creating custom calculations in
@dictionary rules and acessing the results from somwhere else.

Also, this will eventually  enable very powerful ways of
adhoc experimentation and resolve all of the  issues under
"Refactoring" in the August/September Roadmap.