3rd attempt at fixing gap spacing error

2nd attempt at fixing track gap ever expanding, fix a bit of German translations

Merge EISFEUER's bridge mods codings into fly junction, Added an option to select the Ventabren Railway Viaduct by Enzojz, Added German translation to mode

Trying to fix track spacing error, I renamed a variable thinking that the local variable and menu variable might have clash

Added curves, Added more menu options like slope endings, curvature angle, enforce bridged or normal track types

Fixed interface logic, Added another custom bridge mod, Added intelligent presets

Added extra logic to control bridge behaviour

Fix some logic issue with when to use a bridge type, set default multipler to 12 meters because for some reason can't drag a bridge from lower than 12m

Fix issue with people crashing because they haven't include the other bridge mod.<br />Instead now we will use in-games road type bridge for rail because they are narrower and looks good ! <br />Fixed slope when base height is higher than 0<br /> Fixed Logic where both tracks are higher than base height, we will bridge both tracks insteadof terraforming