Merge pull request #26 from Verkalets/26-add-ajax

26 add ajax
add mailer
Merge pull request #29 from Verkalets/15-add-Contact

add mailer
add blog
Merge pull request #30 from Verkalets/17-add-blog

17 add blog
add-security
Merge pull request #31 from Verkalets/add-security

add-security