v2.0.2b6 -> v2.0.2b7

== Removed elements ==
v2.0.2b6 (line=547): Option_ExpandUI : "Expand interface";
v2.0.2b6 (line=548): Option_ExpandUI_Tooltip : "Expands everything to the max.";
v2.0.2b6 (line=854): GeomOptionsMenuButton : "Geometry settings";
v2.0.2b6 (line=855): GeomOptionsMenu : "Options";


== Added elements ==
v2.0.2b7 (line=853): Density_Tooltip : "The density of an object is its mass devided by its area.\n\nThe density in Algodoo corresponds to real-world units g/cm³ or kg/dm³ if one assumes objects in Algodoo are 1mm thick.";
v2.0.2b7 (line=856): Mass_Tooltip : "The mass of an object is its area multiplied by its density.";
v2.0.2b7 (line=858): Friction_Tooltip : "Coefficient of friction. This corresponds to the traction of an object.";
v2.0.2b7 (line=879):// Geometry actions


== Changed elements ==
v2.0.2b6 (line=853): // Geom settings
v2.0.2b7 (line=851): // Material

Option_ResetUI_Tooltip
v2.0.2b6 (line=546): "Resets window positions and expandables";
v2.0.2b7 (line=546): "Resets window positions";

Restitution_Tooltip
v2.0.2b6 (line=858): "Specifies the bounciness of the material";
v2.0.2b7 (line=860): "The coefficient of restitution specifies the bounciness of the material.\n\nFormally this is the ratio [realtive speed before collision]/[realtive speed after collision].\n\nTwo objects with restitution=1 will bounce elastically, i.e. without loosing any energy.";
[NOTE] restitution should be [relative speed after collision]/[realtive speed before collision], shouldn't it? -> Forum topic Bug report: 2.0.2b7 Restitution_Tooltip /Tatt