Refactoring Main.gd. Mostly cutting big methods into smaller ones. (#244)

* Refactoring Main.gd. Mostly cutting big methods into smaller one.

- Reduced size of _ready method in Main.gd
- Moved code from certain parts of old _ready method into seperate methods
- Fixed the translation bug related to CurrentFrame node in TopMenuContainer scene. The CurrentFrame node wasn't updating the language when I was changing language. I've also changed the translation file for this.
- Fixed Global.palette_option_button.selected related warning. Because of some unknown reasons, git didn't push completed line there.
- Moved code from file_menu_id_pressed and view_menu_id_pressed method in Main.gd to separate methods to make it more readable.

* Removed window_title changes from Main.tscn

Co-authored-by: OverloadedOrama <35376950+OverloadedOrama@users.noreply.github.com>

src/UI/TopMenuContainer.tscn

@@ -7,6 +7,9 @@ margin_right = 1280.0
 margin_bottom = 28.0
 rect_min_size = Vector2( 0, 28 )
 custom_styles/panel = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
 
 [node name="MenuItems" type="HBoxContainer" parent="."]
 margin_left = 2.0
@@ -17,40 +20,40 @@ __meta__ = {
 }
 
 [node name="FileMenu" type="MenuButton" parent="MenuItems"]
-margin_right = 29.0
-margin_bottom = 21.0
+margin_right = 35.0
+margin_bottom = 20.0
 mouse_default_cursor_shape = 2
 text = "File"
 switch_on_hover = true
 
 [node name="EditMenu" type="MenuButton" parent="MenuItems"]
-margin_left = 33.0
-margin_right = 64.0
-margin_bottom = 21.0
+margin_left = 39.0
+margin_right = 75.0
+margin_bottom = 20.0
 mouse_default_cursor_shape = 2
 text = "Edit"
 switch_on_hover = true
 
 [node name="ViewMenu" type="MenuButton" parent="MenuItems"]
-margin_left = 68.0
-margin_right = 104.0
-margin_bottom = 21.0
+margin_left = 79.0
+margin_right = 121.0
+margin_bottom = 20.0
 mouse_default_cursor_shape = 2
 text = "View"
 switch_on_hover = true
 
 [node name="ImageMenu" type="MenuButton" parent="MenuItems"]
-margin_left = 108.0
-margin_right = 152.0
-margin_bottom = 21.0
+margin_left = 125.0
+margin_right = 177.0
+margin_bottom = 20.0
 mouse_default_cursor_shape = 2
 text = "Image"
 switch_on_hover = true
 
 [node name="HelpMenu" type="MenuButton" parent="MenuItems"]
-margin_left = 156.0
-margin_right = 191.0
-margin_bottom = 21.0
+margin_left = 181.0
+margin_right = 223.0
+margin_bottom = 20.0
 mouse_default_cursor_shape = 2
 text = "Help"
 switch_on_hover = true
@@ -67,7 +70,7 @@ __meta__ = {
 }
 
 [node name="ZoomLevel" type="Label" parent="TopLabels"]
-margin_top = 6.0
+margin_top = 7.0
 margin_right = 60.0
 margin_bottom = 21.0
 rect_min_size = Vector2( 60, 0 )
@@ -76,8 +79,8 @@ align = 2
 
 [node name="CursorPosition" type="Label" parent="TopLabels"]
 margin_left = 80.0
-margin_top = 6.0
-margin_right = 120.0
+margin_top = 7.0
+margin_right = 128.0
 margin_bottom = 21.0
 text = "[64×64]"
 align = 2
@@ -98,12 +101,20 @@ __meta__ = {
 }
 
 [node name="CurrentFrame" type="Label" parent="HBoxContainer"]
-margin_left = 113.0
-margin_top = 6.0
-margin_right = 216.0
-margin_bottom = 21.0
-text = "Current Frame: 1/1"
+margin_left = 106.0
+margin_right = 198.0
+margin_bottom = 28.0
+size_flags_vertical = 1
+text = "Current frame:"
 valign = 1
 __meta__ = {
 "_edit_use_anchors_": false
 }
+
+[node name="CurrentFrameMark" type="Label" parent="HBoxContainer"]
+margin_left = 202.0
+margin_right = 223.0
+margin_bottom = 28.0
+size_flags_vertical = 1
+text = "1/2"
+valign = 1