fix(scss): make tabs,header,footer aligned right with statusbar

Addresses #943

Before: we offset the has-header and other classes by 20px if a status
bar existed.

After: we simply offset the body by 20px if a status bar exists. This
makes the other classes automatically offset themselves.

scss/_platform.scss

@@ -5,54 +5,15 @@
  * Platform specific tweaks when in Cordova.
  */
 
-.platform-ios7.platform-cordova:not(.fullscreen) {
+.platform-ios7.platform-cordova {
   // iOS7 has a status bar which sits on top of the header.
   // Bump down everything to make room for it. However, if
   // if its in Cordova, and set to fullscreen, then disregard the bump.
-
-  .bar-header {
-    height: 64px;
-
-    &.item-input-inset .item-input-wrapper {
-      margin-top: 19px !important;
-    }
-
-    > * {
-      margin-top: 20px;
-    }
-  }
-
-  .has-header, 
-  .bar-subheader {
-    top: 64px;
+  &:not(.fullscreen) {
+    margin-top: 20px;
   }
-
-  .has-subheader {
-    top: 108px;
-  }
-}
-
-.platform-ios7.status-bar-hide {
-  // Cordova doesn't adjust the body height correctly, this makes up for it
-  margin-bottom: 20px;
-}
-
-.platform-android.platform-cordova {
-
-  .bar-header {
-    height: 48px;
-  }
-
-  .has-header,
-  .bar-subheader {
-    top: 48px;
-  }
-
-  .has-subheader {
-    top: 96px;
-  }
-
-  .title {
-    line-height: 48px;
+  &.status-bar-hide {
+    // Cordova doesn't adjust the body height correctly, this makes up for it
+    margin-bottom: 20px;
   }
 }