Assessments: Don't reactivate the submit button upon retry

Fixed exception when parsing XML with comments.

Restored newlines between imports

Switched to comment-removing parser instead of explicit check

Added newline at the end of file

Fixed exception when parsing XML with comments

MCKIN-2175 Remove popup html on clearResult call and add popup text only...

Fixes for css styling of the shared header

Add a shared header text and number assessment questions

Assessment event tracking

event-proficiency: Add special 'proficiency' event for proficiency score

Only send feedback content to client that should be displayed

Use scope_ids.user_id instead of runtime.user_id

Close feedback popup on click to anywhere else

Reintroduce user_id into events

Line-wrap legend elements in IE.

IE8+ (including IE11) does not wrap the content of legend elements.

Since questions that we put into legend elements can get quite long,
the question would overflow the page in IE.

Adding display:table rule to the legend element forces the legend text
to wrap in IE, without any negative side-effects in other browsers.

See:
http://www.456bereastreet.com/archive/201210/how_to_line_wrap_text_in_legend_elements_even_in_ie
http://stackoverflow.com/questions/6133571/how-can-i-make-legend-text-wrap