"Delete Space" does not delete documents with dots in the name

If one deletes a space, and that space has documents with dots in their page name, these pages will not be deleted.

Steps to reproduce:

• create new space, e.g. "TestSpace" with some dummy WebHome
• create new page in that space, e.g. 'TestPage.txt'
• while still in that space, pick "TestSpace" > "Delete" from the menu
• see that both "WebHome" and "TestPage.txt" are in the list of pages to be removed
• Click "yes"

expected behaviour:

• both "WebHome" and "TestPage.txt" get deleted
  observed behaviour:
• while "WebHome" is deleted and can be seen in the "delete docs", the document "TestPage.txt" is not deleted.