Added insert from action to import file contents from another file

Insertion point calculations fixed, make pasting objects cause the new objects be selected.

Added new subfile dialog

Fixed additive selection; use a green selection area background instead of blue when selecting additive; selection area borders now appear black on bright backgrounds; single additive picking an already-selected object un-selects it.

Converted combo boxes in add object and new part dialogs to radio buttons. Added a convenience widget which makes it easier for me to add groups of radio buttons. My first widget.. :')

Cleanup and some restructuring

Save the configuration before exiting so that grid choice is preserved.

Area selection! This sure was a *pain* to add.

Added panning to GL view, added action for resetting angles, zoom and pan

Use mouse wheel for zooming instead of pressing the mouse button and detecting vertical movement.

Show an error message box when main file loading fails.

A saving failure is a critical error, not a warning and should be drawn as such

Warn for save failures with the save and save as actions, also provide with a button to save the file under a different name.

Keep track of when the file was last saved and warn if there are unsaved changes when the application is closing.

Grid icons..

Make grid actions regular actions rather than auto-generated, this way they can have keyboard shortcuts

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mercurial