Upgraded Angular.js to version 1.2.8, added missing scripts, added new bootstrap themes and added Licence files for all plugins used

  - Upgraded Angular.js to version 1.2.8 (fetched from angular-seed repo) in:
    - app/lib
    - test/lib
  - Added missing scripts:
    - webserver.js: can be used in dev for serving html/css/js files
    - update-angular.sh, test-all.sh: fetched from angular-seed repo
  - Added bootstrap themes from bootswatch, will need more customization later on
  - Added licence files for plugins (angular-seed and themes from bootswatch)