Load third party JavaScript libraries required by draw.io from their corresponding WebJars

[mflorea]

ATM draw.io GitHub repository includes many minified third party JavaScript libraries which we load from the draw.io WebJar we buid. It would be better to:

• make sure these third party libraries are published as WebJars (we can publish them ourselves from https://www.webjars.org/ ); of course, we need to see which version is used by draw.io and publish that version or something compatible
• declare the published WebJars as Maven dependencies of the draw.io WebJar we build ourselves
• exclude the minified third party libraries from the draw.io WebJar we build
• update the RequireJS modules paths in https://github.com/xwikisas/application-diagram/blob/master/application-diagram-ui/src/main/resources/Diagram/DiagramSheet.xml#L275-L281 to load these third party libraries from their corresponding WebJars (instead of loading them from the draw.io WebJar)

[snazare]

may ease upgrade to drawio #273