Fix I edit profile steps
Apply fixed header in css
Remove transitions from menus for behat
Be more specific about some "I follow" steps
Navigation path changes
"Current course" node removed from nav tree
Adapt tests because there are no default blocks
Force some space between action menu items
The main changes here are that the "select the text in" step was modified to select only the
first text node in the editor field, and to focus on it's parent instead of the entire editable div.
Some tests had to be modified to match the new behaviour, and another "real" bug was found in the table plugin.