NOTIFICATIONS: fixed spring context for tests

- Fixed spring context to load proper *.properties file.
- It probably can be much better optimized in future.
- Tests still don't work, since DB schema used by code changed,
  but test-schema in *.sql files is unchanged.
Merge pull request #327 from zlamalp/notifications

NOTIFICATIONS: fixed spring context for tests

- Fixed spring context to load proper *.properties file.
- It probably can be much better optimized in future.
- Tests still don't work, since DB schema used by code changed, but test-schema in *.sql files is unchanged.