Update import for INameChooser for Plone 4.3

Plone 4.3 removes many outdated packages and tidies up imports: http://plone.org/documentation/manual/upgrade-guide/version/upgrading-plone-4.2-to-4.3/updating-package-dependencies
This change will need to be revised if Plone 4.0 support is required for plone.api
Only test for the subset of views which exist for all versions of Plone

Removing cutObject and refreshPortlet since they don't exist for Plone 4.3
Fix portal tests for Plone 4.3

Only test for common items in the registry and the available tools
Merge pull request #76 from cillianderoiste/p43tests

This fixes the tests for Plone 4.3 (Python 2.7)