Merge pull request #559 from lilyfan/Tarboz_w12

Enabled sending emails when subscribing/unsubscribing newsletters
vister can view creater profile
move about file to under root
Merge pull request #560 from kevin000/issue#212

visitor can view creater profile
Merge pull request #561 from kevin000/issue#213

move about page
issue#569 - started User Manual. Created the Intro.
Merge pull request #570 from igoryen/issue#569

issue#569 - started User Manual. Created the Intro.
Added Registration link on header