improvement: allow to further reduce the text size for large displays.

close #514

Author: NathanLovato

ui/UILesson.tscn

@@ -102,7 +102,7 @@ margin_top = 82.0
 margin_right = 760.0
 margin_bottom = 82.0
 mouse_filter = 2
-custom_constants/separation = 28
+custom_constants/separation = 20
 
 [node name="PracticesContainer" type="VBoxContainer" parent="OuterMargin/ScrollContainer/InnerMargin/Content"]
 margin_top = 88.0

ui/components/popups/SettingsPopup.tscn

@@ -139,6 +139,7 @@ hint_tooltip = "Increase or lower the size of all text in the app."
 size_flags_horizontal = 3
 custom_styles/grabber_area_highlight = SubResource( 1 )
 custom_styles/grabber_area = SubResource( 2 )
+min_value = -2.0
 max_value = 2.0
 rounded = true
 tick_count = 3