Add a template list API view

Signed-off-by: Roberto Rosario <Roberto.Rosario@mayan-edms.com>

mayan/apps/common/classes.py

@@ -271,6 +271,17 @@ class Package(object):
 class Template(object):
     _registry = {}
 
+    @classmethod
+    def all(cls, rendered=False, request=None):
+        if not rendered:
+            return cls._registry.values()
+        else:
+            result = []
+            for template in cls._registry.values():
+                result.append(template.render(request=request))
+            return result
+
+
     @classmethod
     def get(cls, name):
         return cls._registry[name]