use internal cursors first, fixes #467
remove too spaces at end of line
add quotation semantic element to oerpub editor
put quotation link in 'add a new...' menu
refactor quotes to use blockquote node type
refs #465: only put <P> element around orphaned media/image elements
Bring event names in line with upstream bootstrap

Bootstrap creates a show/hide event prior to showing/hiding an element and a
shown/hidden element after showing/hiding it. Except, in older versions of
bootstrap this wasn't implemented for tooltips and popovers. We ended up
implementing this functionality itself, but unfortunately we used our own names
for the events, and additionally re-used THEIR event names for our own
purposes. Bootstrap has now fixed this issue, leading to infinite recursion
in our code. This applies a more consistent event naming.
Bring monkey-patched show in line with upstream.
Only monkeypatch if bootstrap is old.
Avoid some errors that occur if the popover never opened.
Add placeholder for semantic block elements while dragging
make semantic block drag helper have a real title
refs #466: display smaller image dialog box when editing description
refs #466: edit description changes to match mockup
center quotation text
show block tites as bold while editing
fix quotation placeholder text
fix selector for block titles
another bugfix to the selector for block titles
Refactoring of code that prevents popup closing

This uses the fact that aloha won't deacivate the editor if it has
.aloha in its hierarchy. Of course marking something with class=aloha
brings about styling baggage, so that had to be reset.