1) Flash warning message of N no of attempts left for the unsuccessful login attempt.

2) Updated some strings in the Preferences for the "Maximum column width" option.

docs/en_US/preferences.rst

@@ -381,7 +381,7 @@ preferences for copied data.
   auto-size to the maximum width of the data in the column as loaded in the
   first batch. If set to *Column name*, the column will be sized to the widest
   of the data type or column name.
-* Specify the maximum width of the column in pixel when 'Columns sized by' is
+* Specify the maximum width of the column in pixels when 'Columns sized by' is
   set to *Column data*. If 'Columns sized by' is set to *Column name* then this
   setting won't have any effect.
 * Use the *Result copy field separator* drop-down listbox to select the field

web/pgadmin/authenticate/__init__.py

@@ -72,12 +72,22 @@ def login():
     # Validate the user
     if not auth_obj.validate():
         for field in form.errors:
+            flash_login_attempt_error = None
             if user:
                 if config.MAX_LOGIN_ATTEMPTS > 0:
                     user.login_attempts += 1
+                    left_attempts = \
+                        config.MAX_LOGIN_ATTEMPTS - user.login_attempts
+                    flash_login_attempt_error = \
+                        gettext('You are left with {0} more attempts.'.
+                                format(left_attempts))
                 db.session.commit()
             for error in form.errors[field]:
                 flash(error, 'warning')
+
+            if flash_login_attempt_error:
+                flash(flash_login_attempt_error, 'warning')
+
         return redirect(get_post_logout_redirect())
 
     # Authenticate the user

web/pgadmin/tools/sqleditor/utils/query_tool_preferences.py

@@ -285,10 +285,10 @@ def register_query_tool_preferences(self):
 
     self.column_data_max_width = self.preference.register(
         'Results_grid', 'column_data_max_width',
-        gettext("Maximum column width (in Pixel)"), 'integer', 0,
+        gettext("Maximum column width"), 'integer', 0,
         category_label=PREF_LABEL_RESULTS_GRID,
         help_str=gettext(
-            'Specify the maximum width of the column when '
+            'Specify the maximum width of the column in pixels when '
             '\'Columns sized by \' is set to \'Column data\'.'
         ),
     )