cleanup from JSTL:

cleanup from JSTL:
- removed all JSTL usages as this mixes JSF with JSTL which more belongs to JSP
- used f:setPropertyActionListener to set the currently used user instance in profileController.user
- sorry that there is still ui:fragment around but I don't like/want overlong expressions in rendered attributes
- better throw IllegalStateException and not quietly return false in isOwnAddressbook() this method should only work when the user is logged-in
- improved some exception text

Signed-off-by:Roland Häder <roland@mxchange.org>