Merge pull request #2 from danielMorenoCenjor/develop

Remaining image methods
Merge pull request #3 from danielMorenoCenjor/develop

Fixed UserResult issues when accreditation attribute is null.
Merge pull request #4 from danielMorenoCenjor/develop

Added new membership operations
Merge pull request #5 from danielMorenoCenjor/develop

Fixed encode in reset password
deleted icons, incompatible with other apps icons
fixed birthday in user result
fixed APICaller and change constants