upgraded to ionic v1.0.0-beta.1

For the ionic-chatroom and ionic-seed subprojects I upgraded the Ionic library from 0.9.20-alpha to v1.0.0-beta.1. The library files are as-is from http://code.ionicframework.com/1.0.0-beta.1/ionic-v1.0.0-beta.1.zip and I've included fixes for the breaking changes (renaming and restructuring of several directives) described in the Ionic changelog at https://github.com/driftyco/ionic/blob/master/CHANGELOG.md