Changed text in isoda practice questionnaire
Added extra instructions on practice questionnaire
Changed the answers to second questionnaire to nooit..erg vaak
Implemented 'disabled' functionality in practice scale.

The user will not be able to change the answers to his questionnaire
in the results screen
Added extra instructions on homepage
Textual change in experience questionnaire
Changed default text color to #444
Changed VAS layout

Labels are now shown next to the scale, and the scale is shown
below the question. Consequence is that users on small screens will
have to scroll.
Changed VAS implementation scripts

Script used before (from vasgenerator.net) were quite old an
did not work properly in IE. The scripts are replaced by a jquery
plugin to show a slider, where the layout is changed to reflect
the original VAS scale.
Merge branch 'isoda' into isoda-final