If your external system is dropbox, you can use Dropbox REST API to get delta content and then fetch/upload assets to DAM.Dropbox - Core API - endpoint reference . In case you are using something else, you can check if there is some API available for that...

From Adobe docs(Overview ):"While the same result can be achieved with template languages like JSP, there the developer must manually ensure that the proper escaping is applied to each variable. As a single omission or mistake on the applied escaping is potentially sufficient to cause a cross-site s...

http://www.jquerybyexample.net/2012/06/check-if-radio-button-is-checked-or.html  can refer this...

aem - CQ5 modify event fired on page delete - Stack Overflow  This has explanation on why modified event is called on deletion. I think you can extend the Gatekeeper process to handle resource asset deletion.

From what I think:- Authorable options for a particular component should be kept in its own dialog. As you are using same component(which may not be used on its own), it should still have it own dialog.. Its component group can be hidden and these can be added statically in parent component.- If you...

I am not very sure but it seems that the info is picked from AEM cache.. Restarting the instance should fix it..

These are generic libraries, so should be kept at template level...

You can use any JS/CSS library. No issues. Just include those in your template and code as you normally would...

I believe you are using maven component plugin.. Component (CQ Component Plugin 4.1.0 API)  has reference of the properties that you can use with it. In case it doesnt work as expected, I believe creating an issue in github repo for that would be better as it is an external plugin..

Under Config manager, search for "Apache Sling Servlet/Script Resolver and error handler" and the property is "Execution Paths"