Fix wordings about mailing list members in the security page (en)
Merge pull request #720 from makimoto/en-security-mailing-list-member

Fix wordings about mailing list members in the security page (en)
Fix BlueFountain Link
fix BlueFountain link in success-stories page across all languages
Fix wordings about mailing list members in the security page (ja, ko)
Merge pull request #728 from marocchino/ja-ko-security

Fix wordings about mailing list members in the security page (ja, ko)
Merge pull request #727 from Takemikazuchi/master

Fix for Issue 726