Bug 725249: [webkit-composer] Increase indent with a right-alignment misbehaves
Bug 725236: [webkit-composer] Pasting HTML content strips formatting

Process GDK_SELECTION_PRIMARY (middle button paste) clipboard as well.
EActionComboBox: Render pixbuf even when action doesn't have an icon

Previously when action have to be disabled (i.e. Header 1 block format
in plain text composer mode) EActionComboBox left the pixbuf unchanged,
just rendering action text as insensitive. So the action looked insensitive,
but still was sensitive thus the previously mentioned example could be triggered
in plain text composer mode.