Fix range checks in WaveformWidgetFactory.
Move waveform preferences to a standalone preference page. Fixes Bug #1014258.
Fix alignment in stream description field.
Fix initialization order issue in DlgPrefWaveform.
Add defaults for the interface, modplug, recording, shoutcast, and waveform pages.
Merge branch 'master' of https://github.com/mixxxdj/mixxx into potentialBugs