Scrolling: Do not use webkit-specific function to scroll readmarker into view

Sorry for that.
Merge pull request #136 from lorenzhs/dynamicloading

Scrolling: Do not use webkit-specific function to scroll readmarker into view
Fix read marker and scrolling behaviour

* don't always jump to the bottom on incoming messages
* don't fiddle with the read marker when loading more lines
Merge pull request #137 from lorenzhs/fixscrolling

Fix read marker and scrolling behaviour
Set container to panel
remove for loop from string decoding