BlogsMU disable profile-css/ and social-media to non-supporters?

so ya.. i cut loose the studiopress/genesis buddy theme and have reverted back to BlogsMU.. i kept running into all kinds of theme issues... so anyway....

i was wondering if it were possible to disable the ability to access the social-media and profile-css of the settings are to people who are not supporters?

also on another note.. where is the language for this theme? i have already made changes in the /themes/blogs-mu/languages po file but there are a few lingering around i can't find.. i want to change the use of the word "blogs" or "blogs"..

and is there a way to control what links are shown in the main header? .. or make some of them group into a drop down?

thanks in advance,
gina