Editor Pitfalls

Today I created a new encounter to test particle effects (Sparkle). Some pitfalls I encountered:

• Terrain was not properly stored in the database (terrain was empty after editing other stuff in the meantime)
• There is already another tile at [x, y, 0]: Terrain contained overlapping tiles. The only resolution was to remove all tiles again and start fresh while testing iteratively
• Model with id 'undefined' does not exist at (/server/content-provider/database.coffee:100): The selection of the model in the role view did not work properly (only after re-selecting the model for each role it worked)
• Number of events in current tick exceeds limit at processEvents (/server/game/scheduler.coffee:66): too many events (20 per tick allowed)
• In the role editor, the same spell sometimes shows up multiple times. Most often when reloading the page while the role editor view is active.
• In the terrain editor: the "threshold" between click and hold and move is too fine. Many times when I want to delete a tile the camera moves instead (annoying). IMO better to use a different keybinding for camera movement or delete...