Add new "headerlogo" setting

-When "homelink" setting is set to 'logo', it now first checks the "headerlogo" value and uses that value if set correctly otherwise it will failover to using the normal "logo"
-Added a sample Exor header logo

app.js

@@ -350,6 +350,13 @@ app.set('nethash', settings.nethash);
 app.set('nethash_units', settings.nethash_units);
 app.set('show_sent_received', settings.show_sent_received);
 app.set('logo', settings.logo);
+
+// Check if header logo file exists
+if (db.fs.existsSync(path.join('./public', settings.headerlogo)))
+  app.set('headerlogo', settings.headerlogo);
+else
+  app.set('headerlogo', '');
+
 app.set('theme', settings.theme);
 app.set('labels', settings.labels);
 app.set('homelink', settings.homelink);

lib/settings.js

@@ -14,6 +14,8 @@ exports.address = "explorer.example.com";
 
 //logo
 exports.logo = "/img/logo.png";
+// header logo
+exports.headerlogo = "/img/header_logo.png";
 
 //The app favicon fully specified url, visible e.g. in the browser window
 exports.favicon = "public/favicon.ico";

settings.json.template

@@ -17,11 +17,16 @@
 
   // logo
   "logo": "/img/logo.png",
+  // header logo. only displayed if the "homelink" setting is set to "logo"
+  "headerlogo": "/img/header_logo.png",
 
   // favicon
   "favicon": "public/favicon.ico",
   
-  // home link (valid options are: title, coin, logo)
+  // home link determines what is displayed in the top-left corner of the header menu (valid options are: title, coin, logo)
+  // title: display "title" text setting
+  // coin: display "coin" text setting
+  // logo: display the "headerlogo" image if it's set to a valid image, otherwise display the "logo" image
   "homelink":  "coin",
   
   // home link logo height (value in px, only valid if using homelink = 'logo')

views/layout.pug

@@ -312,7 +312,7 @@ html(lang='en')
         a.navbar-brand(href='/', style='order:-1;') #{settings.coin}
       else if settings.homelink == 'logo'
         a(href='/', alt=settings.coin + ' Home', title=settings.coin + ' Home', style='order:-1;', data-toggle='tooltip', data-placement='bottom')
-          img.logo-main(src=settings.logo, style='margin:0;max-height:' + settings.logoheight + 'px;')
+          img.logo-main(src=(settings.headerlogo == null || settings.headerlogo == '' ? settings.logo : settings.headerlogo), style='margin:0;max-height:' + settings.logoheight + 'px;')
       .collapse.navbar-collapse(id='navbar-collapse')
         ul.navbar-nav.mr-auto
           li#home