- adds the new copy and paste function
the buttons and tooltips
a selection box
function to rotate the pasted prefabs
connecting pasted with existing knotpoints

- 3d bridges textlogo changed.

- fixed a loading bug

- fixed coloring bugs on streets and beams.

https://youtu.be/EoyXP7Pj4HA

Update 7.april.15

- the orientation grids are now more subtle.

- the shown distances from the last mouseposition are now shown left of the 3d cursor.

- additional textures loaded out of the games texture path now, to be able to be modified. (ie the grids textures)

- profiles can have 15 characters now.

- added Undo button.

- autosave of successful construction when a level is solved.