Move the code to hide SimpleTextArea resizer when SimpleTextArea is inside of a BorderContainer into dijit.css (rather than in the test file).
Move the code to hide SimpleTextArea resizer when SimpleTextArea is inside
of a BorderContainer into dijit.css (rather than in the test file).

Fix overflow:scroll on IE.

Also, remove dijitBorderContainerPane position:absolute from dijit.css since it's hardcoded into the style tag.   Note that adding class names to your children
after they are created doesn't work very well since they tend to get overwritten 
when the child changes state (ie, when SimpleTextArea receives focus).  

Refs #5550.


git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@12428 560b804f-0ae3-0310-86f3-f6aa0a117693

Sam-Cummins/delite,kitsonk/delite,Sam-Cummins/delite,harbalk/delite,harbalk/delite,kitsonk/delite