DAR-2922, DAR-2908, DAR-2903, fix bugs in large modal
DAR-2908, fix large modal positioning on IE
Converted Editor Show Changes modal;
Converted Special:CSS Show Changes
Styleguide fixes;
Code review changes
DAR-3151 fix for jumping Special:Css when opening new Show Changes modal
Closed content div-s
Merge branch 'dev' into DAR-2581
Merge branch 'dev' into DAR-2581
Added ArticlePreview's title break to words;
Added new line at the end
Added line height to address IE
Move the focus to the button on show changes
Merge pull request #2236 from Wikia/DAR-2581

DAR-2581 - Replace Show Changes modals