layouts: Adjust layout-sizes to the correct aspect-ratios

and fix some other issues, to make the layouts more consistent.

The aspect-ratios of the layouts,
should now match the intended aspect-ratios (12:7 and 16:5),
with 3 decimal-digits of precision; either exactly,
or rounded to be a little more square,
so that the entire height of the panel will be used.
Adding 0.001 to `width` in the `default`-outlines of the layouts,
would make the layouts a little wider than the intended aspect-ratio.

Part-of: <https://gitlab.gnome.org/World/Phosh/squeekboard/-/merge_requests/691>

data/keyboards/ru.yaml

@@ -1,29 +1,28 @@
 # Language: Russian
 ---
 outlines:
-    default:       { width: 32.45,  height: 52 }
-    change-view:   { width: 32,     height: 52 }
-    change-view-2: { width: 64.55,  height: 52 }
-    fill:          { width: 156.86, height: 52 }
-    fill-2:        { width: 64.9,   height: 52 }
-    large:         { width: 35.67,  height: 52 }
-    placeholder:   { width: 32.45,  height: 52 }
-    spaceline:     { width: 91.96,  height: 52 }
-    special:       { width: 35.67,  height: 52 }
-    special-2:     { width: 32,     height: 52 }
-    special-3:     { width: 64.55,  height: 52 }
+    default:        { width: 32.415,  height: 52 }
+    change-view:    { width: 32.415,  height: 52 }
+    change-view-2:  { width: 64.83,   height: 52 }
+    fill:           { width: 64.83,   height: 52 }
+    large:          { width: 35.656,  height: 52 }
+    spaceline:      { width: 90.763,  height: 52 }
+    spaceline-fill: { width: 155.593, height: 52 }
+    special:        { width: 32.415,  height: 52 }
+    special-2:      { width: 35.656,  height: 52 }
+    special-3:      { width: 64.83,   height: 52 }
 
 views:
     base:
         - "й ц у к е н г ш щ з х"
         - "ф ы в а п р о л д ж э"
         - "show_upper я ч с м и т ь б ю BackSpace"
-        - "show_numbers preferences ё space ъ  . Return"
+        - "show_numbers preferences ё space ъ . Return"
     upper:
         - "Й Ц У К Е Н Г Ш Щ З Х"
         - "Ф Ы В А П Р О Л Д Ж Э"
         - "show_upper Я Ч С М И Т Ь Б Ю BackSpace"
-        - "show_numbers preferences Ё space Ъ  ,-large Return"
+        - "show_numbers preferences Ё space Ъ ,-large Return"
     numbers:
         - "1 2 3 4 5 6 7 8 9 0"
         - "@ # $ % & - _ + ( )"
@@ -44,7 +43,7 @@ buttons:
         outline: "change-view"
         icon: "key-shift"
     BackSpace:
-        outline: "special-2"
+        outline: "special"
         icon: "edit-clear-symbolic"
         action: "erase"
     BackSpace-wide:
@@ -53,7 +52,7 @@ buttons:
         action: "erase"
     preferences:
         action: "show_prefs"
-        outline: "special"
+        outline: "special-2"
         icon: "keyboard-mode-symbolic"
     show_numbers:
         action:
@@ -70,29 +69,26 @@ buttons:
             set_view: "symbols"
         outline: "change-view-2"
         label: "*/="
-    .:
-        outline: "large"
-    ",-large":
-        outline: "large"
-        text: ","
     space:
         outline: "spaceline"
         text: " "
     space-fill:
-        outline: "fill"
+        outline: "spaceline-fill"
         text: " "
     Return:
         outline: "special-3"
         icon: "key-enter"
         keysym: "Return"
-    --:
-        outline: "placeholder"
-        text: ""
+    .:
+        outline: "large"
+    ",-large":
+        outline: "large"
+        text: ","
     5:
-        outline: "fill-2"
+        outline: "fill"
     "&":
-        outline: "fill-2"
+        outline: "fill"
     √:
-        outline: "fill-2"
+        outline: "fill"
     ¥:
-        outline: "fill-2"
+        outline: "fill"