Fixed issues found dutring testing.

- Fixed labels on the copy form.
- Fixed text on toolbar buttons and right cell header in copy form.
- Fixed open_parent_nodes method to retunr parent node of the existing node so children can be added to that node. Also added code to remove any existing children of the node in automate tree before adding child nodes, it was causing duplication of nodes in the tree.
- Changed code to pass in entry_point variable to common ae_tree_select view to display in the title of tree pop-up.
- Added new fqname_sans_domain method that returns fqname of selected namespace without domain, to prevent an error during copy.

Issue #105