added methods to detect webos version

Open-WebOS-DCO-1.0-Signed-Off-By: Achim Königs <garfonso@mobo.info>
do not sabotage enyo.webos on non webos plattforms

Open-WebOS-DCO-1.0-Signed-Off-By: Achim Königs <garfonso@mobo.info>
made webview work on 2.x phones

Is a bit hacky and probably not the best solution.
Scrolling does not really work. Work around is to
make webview "big enough" and surround it by a
scroller.
But is sufficient for the occasional oauth task.

Open-WebOS-DCO-1.0-Signed-Off-By: Achim Königs <garfonso@mobo.info>
Merge pull request #9 from Garfonso/master

made webview also work on legacy phones