[FEATURE] Add native rsa protection to password fields

This patch adds rsa encryption to password fields. It introduces an own
rsaInput render type which turns fields into true password fields and
removes JavaScript default value '********'.
Furthermore the rsa Api is adjusted to handle the incoming data
correctly.

Releases: master
Resolves: #68166
Change-Id: I4eb8186f77e5b9215310f65d606bc49c71b19880
Reviewed-on: http://review.typo3.org/41286


Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>