Use actionbar. Set targetSdk to 21. Closes #348.
Merge branch 'master' of github.com:liato/android-bankdroid

* 'master' of github.com:liato/android-bankdroid:
  Avoid unnecessary requests to: https://auth.api.swedbank.se/TDE_DAP_Portal_REST_WEB/api/v1/engagement/transactions/null for accounts without an id.
Bump version. v1.9.7.1.