Merge pull request #45 from Yahkob/feature

Plivo/Credentials prompt
Merge pull request #46 from Yahkob/feature

added plivo authenticate credentials
added default pictures for app launch. modified contact details modal
modified contacts info modal
Merge pull request #47 from Yahkob/feature

changed userObject for post request edited data being retrieved on get
Merge pull request #48 from maseh87/contactPictures

Contact pictures
Merge pull request #49 from Yahkob/feature

Fixed Plivo credential page
added error message for invalid plivo credentials