themes: only check password for uid=0 pages, nobody cannot read shadow (#426)

themes/bootstrap/luasrc/view/themes/bootstrap/header.htm

@@ -190,7 +190,7 @@ You may obtain a copy of the License at
   </header>
 
 
-<%- if luci.sys.user.getuser("root") and not luci.sys.user.getpasswd("root") then -%>
+<%- if luci.sys.process.info("uid") == 0 and luci.sys.user.getuser("root") and not luci.sys.user.getpasswd("root") then -%>
 <div class="container">
 	<div class="alert-message warning">
 		<h4><%:No password set!%></h4>

themes/freifunk-generic/luasrc/view/themes/freifunk-generic/header.htm

@@ -94,7 +94,7 @@ You may obtain a copy of the License at
 </div></div>
 <![endif]-->
 
-<%- if luci.sys.user.getuser("root") and not luci.sys.user.getpasswd("root") then -%>
+<%- if luci.sys.process.info("uid") == 0 and luci.sys.user.getuser("root") and not luci.sys.user.getpasswd("root") then -%>
 	<div class="warning">
 		<strong><%:No password set!%></strong><br />
 		<%:There is no password set on this router. Please configure a root password to protect the web interface and enable SSH.%>

themes/openwrt/luasrc/view/themes/openwrt.org/header.htm

@@ -173,7 +173,7 @@ if tree.nodes[category] and tree.nodes[category].ucidata then
 			</div>
 		</noscript>
 
-		<%- if luci.sys.user.getuser("root") and not luci.sys.user.getpasswd("root") then -%>
+		<%- if luci.sys.process.info("uid") == 0 and luci.sys.user.getuser("root") and not luci.sys.user.getpasswd("root") then -%>
 		<div class="errorbox">
 			<strong><%:No password set!%></strong><br />
 			<%:There is no password set on this router. Please configure a root password to protect the web interface and enable SSH.%><br />