Remove inline event handlers from resource template.

This allows us to use a strict CSP on explorer pages.
Merge pull request #543 from STRML/fixInlineEvents

Remove inline event handlers from resource template.
updated client, version
Use handlebars from npm.
Merge pull request #572 from dblock/handlebars-from-npm

Use handlebars installed from npm.
added compatibility table
merged from develop
merged from develop
updated versions
updated link
updated link
Update package.json
Fixing tags check for undefined.