set minimum and target android-sdk
change version-variable-naming to spring-template
add exclusions for spring-framework in favor of spring-android
add dependency to spring-security
add dependency to jackson2
add dependency to apache httpclient
formatting for pom.xml
refactor spice-service to extend from jackson2
make spice-service abstract and add factory-methods for access-grant and oauth2template
initialize oauth2template from factory-method
initialize access-grant from factory method
refactor spice-service for getters/setters for access-grant
remove loading access-grant from shared preferences
NOTE: it is recommended to do something like this in the factory-method
remove updating the access-grant in the shared preferences
NOTE: it is recommended to override the setter and do something like this there
remove TODO-comment for host-verification
NOTE: this should be done in a subclass
remove unused imports from spice-service
remove unused string-constants for shared preferences from spice-service