Changes with Aloha.Editor 1.2.7

Enhancement SUP-588

It is now possible to add custom attributes from a selected link
target as readonly fields to the sidebar when using the link plugin.

Bugfix SUP-58

Possible errors when deleting elements with old Internet Explorer versions have been fixed.

Bugfix SUP-574

Fixed floating of toolbar next to a surface with direction set to rtl:
Horizontal scrolling is now considered correctly and the toolbar is prevented
from floating out of the visible area.

Bugfix SUP-573

When using ENTER to submit a search in the repository browser, the ENTER
possible bubbled to the page and caused something to happen there as well.
Bubbling of the ENTER from the search field is now prevented.