Disambiguate names of email pattern config options

Ifaee5073df introduced rejectedAuthorEmailPattern and
rejectedCommitterEmailPattern but used the same display name as used for
these new options as the names used for allowedAuthorEmailPattern and

Fix this by chosing different display names for the allowed and rejected
email pattern options.

Also improve the explanations shown in tooltips.

Change-Id: I6148c670844caa062aa4ace8b2cdf7f681a324e6
1 file changed