Add statement question
Improve statement
Add XAPI
Add interface
Correct styles
EWD-24132 - Previous answers are available after 'Try again' in Quiz
new line bug
Merge pull request #31 from NadiaGamula/master

EWD-24088 - Add Statement question to Quiz and Exam
EWD-24174 - Radio buttons in Quiz and Exam templates are different for different question types.

Signed-off-by: andriydemchuk <andrewdemchuk@gmail.com>
Merge remote-tracking branch 'upstream/master'