remove needless "test" part from buildout configurations
it is already included in extended configurations from buildout.plonetest
remove unused extension mr.developer
extend from Travis CI configuration in buildout.plonetest as it includes all declarations needed by default
add Pillow as a dependency of the package
fix package distribution
allow hosts to download Robot Framework and friends
Merge pull request #17 from collective/hvelarde-package-refactoring

package refactoring