Added first files for admin and login/signup in admin

paramecio2/libraries/db/extrafields/langfield.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+
+from paramecio2.libraries.db.corefields import CharField
+from paramecio2.libraries.db import coreforms
+from paramecio2.libraries.i18n import I18n
+
+class LangField(CharField):
+    
+    def __init__(self, name, size=255, required=False):
+    
+        super(CharField, self).__init__(name, size, required)
+        
+        select_lang={}
+
+        for lang in I18n.dict_i18n:
+            select_lang[lang]=lang
+
+        self.change_form(coreforms.SelectForm, [select_lang])
+        self.default_value=I18n.default_lang
+        
+    def check(self, value):
+        
+        if value not in I18n.dict_i18n:
+            
+            value=I18n.default_lang
+
+        return value