add api to get/set footer and remove all use of custom.js

src/settings.js

@@ -46,6 +46,9 @@ exports = module.exports = {
     getSysinfoConfig: getSysinfoConfig,
     setSysinfoConfig: setSysinfoConfig,
 
+    getFooter: getFooter,
+    setFooter: setFooter,
+
     provider: provider,
 
     getAll: getAll,
@@ -91,6 +94,8 @@ exports = module.exports = {
     ADMIN_FQDN_KEY: 'admin_fqdn',
     PROVIDER_KEY: 'provider',
 
+    FOOTER_KEY: 'footer',
+
     // blobs
     CLOUDRON_AVATAR_KEY: 'cloudron_avatar', // not stored in db but can be used for locked flag
 
@@ -150,6 +155,8 @@ let gDefaults = (function () {
     result[exports.WEB_SERVER_ORIGIN_KEY] = 'https://cloudron.io';
     result[exports.DEMO_KEY] = false;
 
+    result[exports.FOOTER_KEY] = '&copy; 2020 [Cloudron](https://cloudron.io) [Forum <i class="fa fa-comments"></i>](https://forum.cloudron.io)';
+
     return result;
 })();
 
@@ -661,6 +668,30 @@ function setApiServerOrigin(origin, callback) {
     });
 }
 
+function getFooter(callback) {
+    assert.strictEqual(typeof callback, 'function');
+
+    settingsdb.get(exports.FOOTER_KEY, function (error, value) {
+        if (error && error.reason === BoxError.NOT_FOUND) return callback(null, gDefaults[exports.FOOTER_KEY]);
+        if (error) return callback(error);
+
+        callback(null, value);
+    });
+}
+
+function setFooter(footer, callback) {
+    assert.strictEqual(typeof footer, 'string');
+    assert.strictEqual(typeof callback, 'function');
+
+    settingsdb.set(exports.FOOTER_KEY, footer, function (error) {
+        if (error) return callback(error);
+
+        notifyChange(exports.FOOTER_KEY, footer);
+
+        callback(null);
+    });
+}
+
 function provider() { return gCache.provider; }
 function apiServerOrigin() { return gCache.apiServerOrigin; }
 function webServerOrigin() { return gCache.webServerOrigin; }