Misc fixes for UI alignments.

frontend/assets/scenes/login.fire

@@ -102,7 +102,7 @@
     "_contentSize": {
       "__type__": "cc.Size",
       "width": 960,
-      "height": 480
+      "height": 960
     },
     "_anchorPoint": {
       "__type__": "cc.Vec2",
@@ -114,7 +114,7 @@
       "ctor": "Float64Array",
       "array": [
         480,
-        240,
+        480,
         0,
         0,
         0,
@@ -362,7 +362,7 @@
       "array": [
         0,
         0,
-        210.4394431281402,
+        209.57814771583418,
         0,
         0,
         0,
@@ -451,7 +451,7 @@
     "_contentSize": {
       "__type__": "cc.Size",
       "width": 960,
-      "height": 480
+      "height": 960
     },
     "_anchorPoint": {
       "__type__": "cc.Vec2",
@@ -2809,10 +2809,10 @@
     "_designResolution": {
       "__type__": "cc.Size",
       "width": 960,
-      "height": 480
+      "height": 960
     },
-    "_fitWidth": false,
-    "_fitHeight": true,
+    "_fitWidth": true,
+    "_fitHeight": false,
     "_id": "45irrwnU1MAaF3kwQFnJ++"
   },
   {
@@ -2823,7 +2823,7 @@
       "__id__": 2
     },
     "_enabled": true,
-    "alignMode": 0,
+    "alignMode": 1,
     "_target": null,
     "_alignFlags": 45,
     "_left": 0,