Set default type attribute for button html elements

Set default type attribute for button html elements

According to standard the default type for <button> elements is "submit". Depending on compatibility mode IE might use "button", instead.
To work around the IE bug this patch forces the standard "submit", if nothing is specified explicitly.

See remarks on http://msdn.microsoft.com/en-us/library/ie/ms535211%28v=vs.85%29.aspx :
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The default value of the type attribute depends on the current document compatibility mode. The default value is submit. In other compatibility modes the default value is button.
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Windows Internet Explorer 8 and later. The default value of the type attribute depends on the current document compatibility mode. In IE8 Standards mode, the default value is submit.
In other compatibility modes and earlier versions of Windows Internet Explorer, the default value is button.
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Change-Id: I3b97a8cac74bbfca63699dfcbf1cc5e9a2cef193