site($support): Mention support ticket option
chore($purchase_forms): Rename support category to email_support
chore(*): upgrade 4.1 site branch to build 11

[skip ci]
fix(js/demo/display/basic.partial): syntax error in core demo display code

Also fixed indents and else blocks.
Merge branch 'gh-pages' into site/4.1.0
chore(*): update site to 4.1.0 RC

[skip ci]
chore(*): Upgrade site to 4.1.0-12
chore(*): upgrade to build 13
fix(customize.html): Fix wrong title in image-validation
fix merge conflicts
demo fix
css code clean-up
added new demos code