Custom saved tabs folder support, changed version

Added support for choosing a different folder to store saved tab
collections, removing hard-coded dependencies upon having the default
location. Enabled "Open Folder" button in Tab Manager. Minor change of
layout in Tabs options pane. Enabled Hungarian to be selected as a
language. Changed version info to "2.0.3.22110", and changed description
to "Beta 2 Update 1", and updated copyright info. Other files updated
because I'm working with build configurations.