[BUGFIX] felogin reset password links not clickable

Encoding a few extra character besides the ones according to RFC3986
makes password reset links working again in various mail clients which
do not comply to this RFC (and which do not have plans to fix this in
the near future).

Change-Id: I0b42bef6cb732c5fc6cc2d900407271cb606e301
Fixes: #23984
Releases: 6.2, 6.1, 6.0, 4.7, 4.5
Reviewed-on: https://review.typo3.org/27826
Reviewed-by: Jigal van Hemert
Tested-by: Jigal van Hemert