Added tip for new users

Author: AnonymousX86

python_password/PyPassword.kv

@@ -40,6 +40,10 @@
                 IconLeftWidget:
                     icon: 'information-outline'
 
+<NewbieTip>:
+    IconLeftWidget:
+        icon: root.icon
+
 Screen:
     MDToolbar:
         id: toolbar

python_password/PyPassword.py

@@ -10,13 +10,14 @@
 from cryptography.hazmat.primitives import hashes
 from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
 from kivy import Config
-from kivy.properties import ObjectProperty
+from kivy.properties import ObjectProperty, StringProperty
 from kivy.uix.boxlayout import BoxLayout
 from kivymd.app import MDApp
 from kivymd.uix.button import MDRectangleFlatIconButton, MDRaisedButton, MDFillRoundFlatIconButton, \
     MDRoundFlatIconButton
 from kivymd.uix.dialog import MDDialog
-from kivymd.uix.list import OneLineListItem
+from kivymd.uix.list import OneLineListItem, ThreeLineAvatarListItem, IconRightWidget, IconLeftWidget, \
+    ThreeLineIconListItem
 
 from python_password.utils.crypto import *
 from python_password.utils.database import *
@@ -46,6 +47,11 @@ def alert(self):
         return alert
 
 
+class NewbieTip(ThreeLineIconListItem):
+    """Widget that's showed when there's one or two passwords in database."""
+    icon = StringProperty()
+
+
 class ContentNavigationDrawer(BoxLayout):
     """Container for side menu."""
     screen_manager = ObjectProperty()