Add admin hooks for get categories

src/controllers/admin.js

@@ -136,10 +136,16 @@ adminController.categories.get = function(req, res, next) {
 			return next(err);
 		}
         
-		res.render('admin/manage/category', {
-			category: data.category[0],
-			privileges: data.privileges
-		});
+        plugins.fireHook('filter:admin.categories.get', {req: req, res: res, category: data.category[0], privileges: data.privileges}, function(err, data) {
+			if (err) {
+				return next(err);
+			}
+            
+            res.render('admin/manage/category', {
+                category: data.category,
+                privileges: data.privileges
+            });
+        });
 	});
 };
 
@@ -153,13 +159,19 @@ adminController.categories.getAll = function(req, res, next) {
 			return next(err);
 		}
         
-		categoryData.filter(Boolean).forEach(function(category) {
-			(category.disabled ? disabled : active).push(category);
-		});
+        plugins.fireHook('filter:admin.categories.getAll', {req: req, res: res, categories: categoryData}, function(err, data) {
+			if (err) {
+				return next(err);
+			}
+            
+			data.categories.filter(Boolean).forEach(function(category) {
+                (category.disabled ? disabled : active).push(category);
+            });
 
-		res.render('admin/manage/categories', {
-			active: active,
-			disabled: disabled
+            res.render('admin/manage/categories', {
+                active: active,
+                disabled: disabled
+            });
 		});
 	});
 };