[ticket/13087] Correctly link to user profile when contact field has no URL

Broken by 975c5655f0e9b65b7de3f2b832f1ef660a473832

PHPBB3-13087
Merge pull request #2993 from nickvergessen/ticket/13087

[ticket/13087] Correctly link to user profile when contact field has no URL
[ticket/13086] String replaces 50 with 20

PHPBB3-13086
Merge pull request #2994 from Skouat/ticket/13086-olympus

[ticket/13086] Update ACP_MASS_EMAIL_EXPLAIN language key

* Skouat/ticket/13086-olympus:
  [ticket/13086] String replaces 50 with 20
Merge branch 'develop-olympus' into develop-ascraeus

* develop-olympus:
  [ticket/13086] String replaces 50 with 20

Conflicts:
	phpBB/language/en/acp/email.php