CMS-1338 Image picker visual adjustments

Add image zooming ang basic image popup dialog
Merge branch 'master' of github.com:enonic/wem-ce into CMS-1338
CMS-1338 Image picker visual adjustments

Add styles for image dialog and handlers for its buttons
Merge branch 'master' of github.com:enonic/wem-ce into CMS-1338

Conflicts:
	modules/wem-webapp/src/main/webapp/admin/resources/app/view/contentManager/wizard/form/input/Image.js
	modules/wem-webapp/src/main/webapp/admin/resources/lib/ext/resources/css/admin.css
	modules/wem-webapp/src/main/webapp/admin/resources/lib/ext/resources/sass/admin/css/_inputimage.scss
CMS-1338 Image picker visual adjustments

Fix styles after merge
Merge pull request #181 from enonic/CMS-1338

CMS-1338 Image picker visual adjustments