[table views] closes #1986413: refactor TableView, EntityAttributesTableView, PyValTableView
See the tickets for a description of the why.
* one should now use RsetTableView instead of TableView and EntityTableView
instead of EntityAttributesTableView.
* a flexible layout object has been extracted, TableLayout
* PyVaTableView has been rewritten using the same base class / renderer
debian/tmp/usr/lib/PY_VERSION/site-packages/cubicweb/common/ usr/lib/PY_VERSION/site-packages/cubicweb
debian/tmp/usr/lib/PY_VERSION/site-packages/cubicweb/entities/ usr/lib/PY_VERSION/site-packages/cubicweb
debian/tmp/usr/lib/PY_VERSION/site-packages/cubicweb/ext/ usr/lib/PY_VERSION/site-packages/cubicweb
debian/tmp/usr/share/cubicweb/cubes/ usr/share/cubicweb/
debian/tmp/usr/lib/PY_VERSION/site-packages/cubicweb/*.py usr/share/pyshared/cubicweb