Fixed following issues reported by SonarQube:

1) Replace this if-then-else statement by a single return statement. (clumsy)
2) 'switch' statements should have at least 3 'case' clauses. (bad practice)

web/pgadmin/browser/server_groups/servers/databases/schemas/functions/static/js/function.js

@@ -437,13 +437,12 @@ define('pgadmin.node.function', [
           if(this.node_info && 'catalog' in this.node_info) {
             return true;
           }
-          switch(this.name){
-          case 'prosupportfunc':
+          if(this.name === 'prosupportfunc'){
             var item = pgAdmin.Browser.tree.selected();
             if(pgAdmin.Browser.Nodes['function'].getTreeNodeHierarchy(item).server.user.is_superuser)
               return false;
             return true;
-          default:
+          } else {
             return false;
           }
         },

web/pgadmin/browser/server_groups/servers/databases/schemas/functions/static/js/procedure.js

@@ -98,12 +98,7 @@ define('pgadmin.node.procedure', [
         ),
         canVarAdd: function() {
           var server = this.node_info.server;
-          if (server.version < 90500) {
-            return false;
-          }
-          else {
-            return true;
-          }
+          return !(server.version < 90500);
         },
         isVisible: function() {
           if (this.name == 'sysfunc') { return false; }

web/pgadmin/browser/server_groups/servers/databases/schemas/functions/static/js/trigger_function.js

@@ -358,13 +358,12 @@ define('pgadmin.node.trigger_function', [
           if(this.node_info &&  'catalog' in this.node_info) {
             return true;
           }
-          switch(this.name){
-          case 'prorows':
+          if (this.name === 'prorows'){
             if(m.get('proretset') == true) {
               return false;
             }
             return true;
-          default:
+          } else {
             return false;
           }
         },

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/static/js/column.js

@@ -661,11 +661,7 @@ define('pgadmin.node.column', [
           type: 'text', mode: ['properties'], deps: ['is_inherited'],
           group: gettext('Definition'),
           visible: function(m) {
-            if (!_.isUndefined(m.get('is_inherited')) && m.get('is_inherited')) {
-              return true;
-            } else {
-              return false;
-            }
+            return (!_.isUndefined(m.get('is_inherited')) && m.get('is_inherited'));
           },
         },{
           id: 'is_sys_column', label: gettext('System column?'), cell: 'string',
@@ -871,11 +867,7 @@ define('pgadmin.node.column', [
           if(this.node_info &&  'schema' in this.node_info)
           {
             // We will disable control if it's in 'edit' mode
-            if (m.isNew()) {
-              return false;
-            } else {
-              return true;
-            }
+            return !(m.isNew());
           }
           return true;
         },
@@ -903,11 +895,7 @@ define('pgadmin.node.column', [
               return false;
             }
             // if we are in edit mode
-            if (!_.isUndefined(m.get('attnum')) && m.get('attnum') > 0 ) {
-              return false;
-            } else {
-              return true;
-            }
+            return !(!_.isUndefined(m.get('attnum')) && m.get('attnum') > 0 );
           }
           return true;
         },
@@ -947,15 +935,11 @@ define('pgadmin.node.column', [
           d = i ? t.itemData(i) : null;
         }
         // If node is under catalog then do not allow 'create' menu
-        if (_.indexOf(parents, 'catalog') > -1 ||
-              _.indexOf(parents, 'coll-view') > -1 ||
-              _.indexOf(parents, 'coll-mview') > -1 ||
-              _.indexOf(parents, 'mview') > -1 ||
-              _.indexOf(parents, 'view') > -1) {
-          return false;
-        } else {
-          return true;
-        }
+        return !(_.indexOf(parents, 'catalog') > -1 ||
+          _.indexOf(parents, 'coll-view') > -1 ||
+          _.indexOf(parents, 'coll-mview') > -1 ||
+          _.indexOf(parents, 'mview') > -1 ||
+          _.indexOf(parents, 'view') > -1);
       },
     });
   }

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/compound_triggers/static/js/compound_trigger.js

@@ -397,11 +397,7 @@ define('pgadmin.node.compound_trigger', [
               return false;
             } else {
               // if we are in edit mode
-              if (!_.isUndefined(m.get('attnum')) && m.get('attnum') >= 1 ) {
-                return false;
-              } else {
-                return true;
-              }
+              return !(!_.isUndefined(m.get('attnum')) && m.get('attnum') >= 1 );
             }
           }
           return true;

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/constraints/check_constraint/static/js/check_constraint.js

@@ -210,11 +210,7 @@ define('pgadmin.node.check_constraint', [
           d = i ? t.itemData(i) : null;
         }
         // If node is under catalog then do not allow 'create' menu
-        if (_.indexOf(parents, 'catalog') > -1) {
-          return false;
-        } else {
-          return true;
-        }
+        return !(_.indexOf(parents, 'catalog') > -1);
       },
     });
 

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/constraints/exclusion_constraint/static/js/exclusion_constraint.js

@@ -698,8 +698,7 @@ define('pgadmin.node.exclusion_constraint', [
           select2:{allowClear:false},
           filter: function(m) {
             // Don't show pg_global tablespace in selection.
-            if (m.label == 'pg_global') return false;
-            else return true;
+            return !(m.label == 'pg_global');
           },
         },{
           id: 'amname', label: gettext('Access method'),

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/constraints/index_constraint/static/js/primary_key.js

@@ -417,11 +417,7 @@ define('pgadmin.node.primary_key', [
           disabled: function(m) {
             // Disable if index is selected.
             var index = m.get('index');
-            if(_.isUndefined(index) || index == '') {
-              return false;
-            } else {
-              return true;
-            }
+            return !(_.isUndefined(index) || index == '');
           },
         },{
           id: 'include', label: gettext('Include columns'),