[menu] Set tags and window class on menu window.
[menu] Set tags and window class on menu window.

darkfeline/wmii,rvedam/wmii,Sirikid/wmii,Sirikid/wmii,wingyplus/wmii,wingyplus/wmii,jerluc/wmii,rvedam/wmii,jerluc/wmii,sigmavirus24/wmii,darkfeline/wmii,Sirikid/wmii,rvedam/wmii,jerluc/wmii,wingyplus/wmii,sigmavirus24/wmii,jerluc/wmii,sigmavirus24/wmii,rvedam/wmii,sigmavirus24/wmii,darkfeline/wmii,rvedam/wmii,Sirikid/wmii,darkfeline/wmii,wingyplus/wmii,jerluc/wmii,wingyplus/wmii,darkfeline/wmii,sigmavirus24/wmii,Sirikid/wmii