ios iframe scroll bug fix with ionic, webkit overflow

https://github.com/driftyco/ionic/issues/1151
http://davidwalsh.name/scroll-iframes-ios

<ion-content scroll="true" overflow-scroll="true" class="has-header
padding">
<h1>Dashboard00</h1>
<iframe src="http://xkcd.com" style="width:100%;height:100%"></iframe>
</ion-content>
bugfix#tiny
bugfix#iphone 5 not fullscreen
iphone 5 not fullscreen cause splash only have 960*640
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