Static operations for static properties

[Matthias Schoettle]

When getters and/or setters are created for static properties (attributes or association ends), they are not static.

Steps to reproduce:

1. Make association end or attribute static
2. Create getter, setter or both for the property

Actual Result:

Getter/setter operation that is not static.

Expected Result:

Getter/setter operation that is static.

[Ryan Languay]

References #415: static getters and setters (new) for static variables

→ <<cset 9fce1cb51da2>>

[Ryan Languay]

References issue 415: code review changes

→ <<cset 97a8b80db552>>

[Ryan Languay]

Merged in Issues/415-StaticRefs (pull request #93)

References #415: static getters and setters (new) for static variables

Approved-by: Matthias Schoettle [e-mail]

→ <<cset acd51d296df5>>