Merge pull request #147 from peterzd/api_home

[feature]returns user's following cards batch
Merge pull request #149 from peterzd/api_home

Api home
Merge pull request #151 from peterzd/api_home

[feature]my_wall feeds
[chore]user can invite multiple users by email
Merge pull request #153 from peterzd/fix_invitation_email

[chore]user can invite multiple users by email
[chore]add default content for invitation email
Merge pull request #155 from peterzd/fix_invitation_email

[chore]add default content for invitation email
[chore]user user input content replace default one
Merge pull request #157 from peterzd/fix_email_content

[chore]user user input content replace default one
[bug]make the infinitescroll text and img work
Merge pull request #159 from peterzd/fix_load_more

[bug]make the infinitescroll text and img work
[feature]response photo/:id