290420 New theme, personal settings and bugfixes

themes/how_to_create_a_theme

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+If you want to create a new theme for your instance, all you have to do is 
+create a new folder in this /themes directory with the name of your theme, 
+create a directory called "css" inside of it, copy the file /css/color.css
+from the base directory into this new directory and modify the values in 
+it.
+
+you can also just copy of one of the theme folders in this directory
+and modify the values to your liking.