Children of a pages with a dot in the name are not properly identified (children listing, delete) - on mysql

To reproduce:

• create a page with a dot (.) in the name, non-terminal
• create one or more subpages of this page
• go on the parent page with dot in the name, from the ellipse menu, choose to see children
  • expected result: the pages created previously at step 2 should be displayed in this livetable
  • actual result: no page is displayed, even if in the navigation panel the tree is correctly displayed for this page
• from the cog menu, try to delete the page
  • expected result: there should be a message proposing to delete the children of this page as well
  • actual result: there is no message about the children of this page, it behaves like a page that does not have children

Note that the delete problem is quite important, it blocks deletion of a subtree of pages, rooted in a page with a dot in the name.