Merge pull request #11 from kananoja/master

[nemo-qml-plugin-email] Add nesting level role to folder list model
[nemo-qml-plugin-email] Add nesting level role to folder list model.

Update spec file and commit to be picked by the bot.
[nemo-qml-plugin-email] Fix inverted Q_ASSERT.
Merge pull request #12 from VDVsx/master

Fix inverted Q_ASSERT
[nemo-qml-plugin-email] Add isAccountValid and isMessageValid invokables.
Merge pull request #13 from VDVsx/master

Add isAccountValid and isMessageValid invokables.
[nemo-qml-plugin-email] Add some folder id APIs.