ARIS Administration| integrate CI (Colors, Fonts) for ARIS dashboarding

Currently, the colors and fonts of ARIS dashboards are not managed via the ARIS Administration (which allows customers to enable their corporate identity in the means of colors and fonts)

For the dashboarding component, only a fixed font-family (Roboto-Flex) with a fixed font-size depending on the use case (title, subtitle, item, name) is implemented as a first step to guarantee that all widgets are scaled in an optimal way and texts are well readable.

Please also take in account the colors and fonts similar to the rest of the ARIS Portal.