workspace: Remove unused parameter
workspace: Fix style
popupMenu: Remove unused imports
calendar: Use Clutter.GridLayout

Clutter.TableLayout has been deprecated, so move to the recommended
replacement.
calendar: Port events to Clutter.GridLayout

Clutter.TableLayout has been deprecated, so move to the recommended
replacement.
appDisplay: Use Clutter.GridLayout

Clutter.TableLayout has been deprecated, so move to the recommended
replacement.
keyring: Use Clutter.GridLayout

Clutter.TableLayout has been deprecated, so move to the recommended
replacement.
networkAgent: Use Clutter.GridLayout

Clutter.TableLayout has been deprecated, so move to the recommended
replacement.