Merge pull request #31 from nemomobile/vdv-devel

[nemo-qml-plugin-email] Start messageserver as a detached process.
[nemo-qml-plugin-email] Simplify contentType recognition
Merge pull request #34 from rainemak/master

[nemo-qml-plugin-email] Simplify contentType recognition
Merge branch 'master' into vdv-devel
[nemo-qml-plugin-email] Add sync status to syncronizing changed signal.