Feature request: when right-clicking on a PDF file in Explorer, show an entry "present via pympress"*. This saves me from

• starting pympress' GUI and using its open file dialog, which is hard to navigate (lacking ability of pasting a path, non-Windows-native UX)

• starting pympress on CLI for which I first need to figure out its path

Does this make sense for other OS, too?

<!— Provide a general summary of the issue in the Title above —>

Expected Behavior

<!— If you’re describing a bug, tell us what should happen —>
<!— If you’re suggesting a change/improvement, tell us how it should work —>

Current Behavior

<!— If describing a bug, tell us what happens instead of the expected behavior —>
<!— If suggesting a change/improvement, explain the difference

Add a tutorial buttons that shows how to:

1. open a comic
2. load comics from the library
3. change pages
4. change pages from library
5. change settings

Remove the old splash screen implementation from the Viewer RI as it's kind of pointless and doesn't work that will on JDK > 8.

Also touch up the about dialog and support graphics to reflect the projects new home.