Uncommenting other method inheritance tests.
Fixes #544
DRY propagateMethodChange
st.initClass call moved to st.removeMethod
initClass refactoring, no need for installSuperclass
Merge branch 'breaking-1' into gh-544

Conflicts:
js/boot.js
Merge branch 'gh-544' into breaking-monolithic-bootjs

Conflicts:
js/boot.js