* Project file refactor
Move all the .csproj files to the new .NET Core style.
This doesn't make any difference for compiling for Framework,
but it does reduce a ton of useless boilerplate.
As an extension of this, killed a bunch of uncompiled & unmaintained .cs files.
Compiling for release (to profile) works now.
Removed AnyCPU targets from the solution file.
* Fix compiler warnings.
* Removed unused method TileRef.GetStep().
Removed unused property TileRef.TileSize.
Removed unused property TileRef.Tile, made the field public with the same name.
Made the TileRef struct readonly.
Removed property TileRef.TileDef.
Removed property TileRef.LocalPos.
Renamed GridTile to GridIndices.
Implemented IEquatable on TileRef.
Implemented Equality operators on TileRef.
Added PublicAPI attribute to TileRef.
Added doc comments to TileRef.
* Modified Tile:
Added the PublicApi annotation.
Made struct readonly.
Filled out doc comments.
Changed auto properties to readonly fields.
Renamed TileId to TypeId.
Added a static Empty tile to the struct.
Implemented IEquatable.
* Modified MapCoordinates:
Added PublicApi attribute.
Implemented IEquatable.
Filled out doc comments.
Removed Map property.
* Modified ScreenCoordinates:
Filled out doc comments.
Added the PublicApi attribute.
Implemented IEquatable.
* Modified GridCoordinates:
Removed method IsValidLocation.
* Removed property GridCoordinates.Grid.
* Removed GridCoordinates.Map.
* Removed GridCoordinates.MapId.
* Removed property GridCoordinates.IsWorld.
Removed constructors taking a MapId.
* Removed static IoCManager calls from GridCoordinates.
* Modified GridCoordinates:
Added attribute PublicApi.
Filled out doc comments.
* Filled out doc comments for MapGrid.
Filled out doc comments for MapIndices.
Misc refactors for both.
* added command to teleport grids.
* Added method Box2.Intersect.
Added method Box2.Union.
Placement manager now spawns new grids to place tiles not connected to an existing grid.
RobustToolbox projects should be named Robust.*
This PR changes the RobustToolbox projects from SS14.* to Robust.*
Updates SS14.* prefixes/namespaces to Robust.*
Updates SpaceStation14.sln to RobustToolbox.sln
Updates MSBUILD/SS14.* to MSBUILD/Robust.*
Updates CSProject and MSBuild references for the above
Updates git_helper.py
Removes Runserver and Runclient as they are unusable
