Merge pull request #76 from jpetrell/master

[lipstick] Give a warning if home window component loading fails
[lipstick] Allow the compositor to turn the display off
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[lipstick] Use libcontentaction to open URLs also when it's Lipstick itself opening the URLs
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[lipstick] Remove stale entries from the launcher settings when storing launcher icon positions
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[lipstick] When setting display updates on/off, show/hide the compositor window
Merge pull request #77 from Vesuri/master

[lipstick] When setting display updates on/off, show/hide the main window
Bump version
[compositor] don't add overlay windows to WindowModel
[lipstick] Hide the physical window, not just the home item inside it.

We want to hide everything the compositor does.

Done-by: Mikko Harju
Small packaging fixes.
Merge pull request #79 from rburchell/master

Screen power fixup
[lipstick] Set the compositor window's default color to black to avoid a white screen on startup
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[lipstick] Let the QML implementation know when the display has been switched on
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[lipstick] Sanitize LipstickCompositor callable/signal naming
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