Refine adaption of Oracle's Deployment changes, i.e. >= 7u51

Partial revert commit 971190d8718bb1e2b7eafdd49cfa2523dd8a8152:
  - Manifest: 'Permissions: sandbox'
    so we do not raise privileges!

Refine description about signing, sandbox and privileges in html files.
JNLP/Applets: Remove 'sun.java2d.noddraw' - We don't test with these flags either ..