Update app UI (colors and rounded corners)

iOS Basic Connect: ![iOS Screenshot](http://erc.bz/mnMz.png)
iOS Advanced Connect: ![iOS Screenshot](http://erc.bz/wmCU.png)
iOS App List: ![iOS Screenshot](http://erc.bz/Xiw4.png)
Android 4.4 Basic Connect: ![Android 4.4 Screenshot](http://erc.bz/bU0k.png)
Android 4.4 Advanced Connect: ![Android 4.4 Screenshot](http://erc.bz/vo7d.png)
Android 4.4 App List: ![Android 4.4 Screenshot](http://erc.bz/pE8b.png)

I updated the colors, flattened the ui and made the tabs a little taller as they are difficult to tap sometimes (I found myself dismissing the dialog a lot).