Merge pull request #7 from nemomobile/vdv-devel

[qmf-notifications-plugin] Enable translations.
Merge pull request #8 from nemomobile/vdv-devel

Fix typo
[qmf-notifications-plugin] Fix plurar handling in notifications translations.
[qmf-notifications-plugin] Fix plurar handling in notifications translations.
[qmf-notifications-plugin] Remove notification for messages belonging to disabled/removed accounts.
[qmf-notifications-plugin] Don't assert if accountId is invalid.

AccountId becomes invalid for service actions when account is removed
while the action is running.