Developer mode: Asynchronous D-Bus installed check

[systemsettings] Make developer mode install check asynchronous
[nemo-qml-plugin-systemsettings] Add enableALS property and monitor property changes
Merge pull request #3 from martinjones/master

[nemo-qml-plugin-systemsettings] Add enableALS property and monitor prop...
Merge pull request #5 from blammit/master

[systemsettings] Add LanguageModel::supportedLanguages()
Merge pull request #4 from thp/developer-mode-async-check

Developer mode: Asynchronous D-Bus installed check
[systemsettings] Fix current profile property not updating properly

Profile property was not updating when profile changes came outside
this controller.
Merge pull request #6 from pvuorela/master

[systemsettings] Fix current profile property not updating properly
[systemsettings] Allow vibration to be turned always off
[systemsettings] bump spec version
Merge pull request #7 from pvuorela/master

Allow vibration to be turned always off
[systemsettings] allow to explicitly refresh devicelock status

In case there are multiple instances of DeviceLock, it's currently
not supported to get state change signals automatically.
[systemsettings] add device clearing support for devicelock
Merge pull request #9 from pvuorela/master

Add support for refreshing devicelock state and initiating device lock based device clearing
[qmldir] Add Module Identifier Directive
Merge pull request #10 from thp/module-identifier-directive

[qmldir] Add Module Identifier Directive
[devmode] Handle errors and fallback for developer mode detection

In case the store client is not available, fall back to a simpler
way of detecting whether developer mode is installed or not.

When calls to enable / disable developer mode fail, report back the
error immediately instead of waiting for a reply that never comes.
Merge pull request #11 from thp/developer-mode-error-handling

[devmode] Handle errors and fallback for developer mode detection
[systemsettings] support updating 12/24h to timed
Merge pull request #12 from pvuorela/master

[systemsettings] support updating 12/24h to timed
[systemsettings] Read bluetooth address from /var/lib/bluetooth instead

QNetworkInfo reads the address from /sys/class/bluetooth/hci0/address
which is set to "00:00:00:00:00:00" if the adapter was not available
at time of query.