MOre recent version -- Adobe Experience Manager Help | Creating Adobe Experience Manager 6.3 Sling Model Components

See this article - it will point you in the correct direction: Adobe Experience Manager Help | Working with Sling Models in Adobe Experience Manager

This does not sound like a supported use case. Sounds like a hack and will not be supported by the AEM Cust Care team.

You need to create a RTE plug-in. Details can be found in this FAQ: Scott's Digital Community: Adobe Experience Manager FAQs and other Tips

See Interface LiveCopy

I do not think you can use JS to get this type of information - you would need to use the Strongly types API: "The Adobe AEM Quickstart and Web Application." So to hook this API into an HTL component - you should use SLing Model - not JS HTL.

Lokesh covers this in this webinar: Scott's Digital Community: [Webinar | February ] Ask the AEM Community Expert: Best practice to query JCR data using Que…

Just install the package where you backed up your data

Most of the custom logging requires you to map log to Java packages defined in code.

See this - Internationalizing UI Strings