Feature Editor modify/improve default tool selection

[rushingseas8]

When creating a new Feature, there are no tiles on-screen. This means that the default tool (Tile Inspector) has no functionality, because there are no Tiles to inspect. The expectation is to be able to immediately interact with the UI. Possible remedies include changing the default behavior to be one of (in order of preference):

1. Click to place a Tile (the functionality of Tile Brush; as simple as swapping the order of the tools)
2. Click and drag to move (currently bound to middle mouse button; this could be implemented as a dedicated tool that allows panning, which is selected as the default tool on startup)