Resolved an issue related to quoting the wrong keywords for the types.

It was due to wrong index used for the COL_NAME_KEYWORD, used by the
'needsQuoting' function.

Also, replaced a tab with a space in the generate_keyword.py file.

Reported by: Sanket Mehta, Khushboo Vashi

web/pgadmin/utils/driver/psycopg2/__init__.py

@@ -875,7 +875,7 @@ class Driver(BaseDriver):
             return False
 
         # COL_NAME_KEYWORD
-        if forTypes and category == 3:
+        if forTypes and category == 1:
             return False
 
         return True