reverted #1047 (updating styles)

as it is causing cellheight() to fail (#1068) which is worse and more common than missing animation.

Author: Alain Dumesny

src/gridstack.js

@@ -1091,14 +1091,14 @@
       maxHeight = this._styles._max;
     }
 
-    if (this._styles._max !== 0 && maxHeight <= this._styles._max) { // Keep this._styles._max increasing
-      return ;
-    }
     this._initStyles();
     this._updateContainerHeight();
     if (!this.opts.cellHeight) { // The rest will be handled by CSS
       return ;
     }
+    if (this._styles._max !== 0 && maxHeight <= this._styles._max) { // Keep this._styles._max increasing
+      return ;
+    }
 
     if (!this.opts.verticalMargin || this.opts.cellHeightUnit === this.opts.verticalMarginUnit) {
       getHeight = function(nbRows, nbMargins) {