Allows manual creation of themes and logos to be used in applications created using the 'shinydashboard' package. Removes the need to change the underlying css code by wrapping it into a set of convenient R functions.
-WARNING: the 'dashboardthemes' package is no longer being maintained as of version 1.1.6,
-and will eventually be removed from CRAN.
-It is recommended that users switch over to the 'bslib' or 'fresh' theming packages available on CRAN.