use HTTP::BrowserDetect for browser detection

etc/WebGUI.conf.original

@@ -1067,36 +1067,6 @@
 #          "extrasExclude": ["tinymce", "^blah$"]
 #        },
 
-#A list of UserAgents of recognized mobile platforms.  If useMobileStyle is set in the
-#Admin settings, then the mobile style will be used for these browsers.
-   "mobileUserAgents" : [
-      "AvantGo",
-      "DoCoMo",
-      "Vodafone",
-      "EudoraWeb",
-      "Minimo",
-      "UP\\.Browser",
-      "PLink",
-      "Plucker",
-      "NetFront",
-      "^WM5 PIE$",
-      "Xiino",
-      "iPhone",
-      "Opera Mobi",
-      "BlackBerry",
-      "Opera Mini",
-      "HP iPAQ",
-      "IEMobile",
-      "Profile/MIDP",
-      "Smartphone",
-      "Symbian ?OS",
-      "J2ME/MIDP",
-      "PalmSource",
-      "PalmOS",
-      "Windows CE",
-      "Opera Mini"
-   ],
-
 # For the siteIndex content plugin.  Whether or not the auto-generated siteIndex should
 # show hidden pages
    "siteIndex" : {