Configurable welcome screen

[jsbien]

A DjVu document optionally specified in preferences should be displayed in the main panel when the program starts.

[jsbien]

For testing any DjVu document is appropriate.

[Michał Rudolf]

Does it really make sense? The program immediately connects to the server and displays information about current corpus. Where DjVu document can be displayed?

[jsbien]

But what is the current corpus when used for the first time? Cf. # 81.

The document should be displayed (optionally!) in the main panel. It can contain information e.g. about the program and available servers.

[Michał Rudolf]

True, but this will be shown only at the first run. is that enough?

[jsbien]

Yes

[jsbien]

But at least for testing purpose there should be a way to display it in any moment e.g. using menu Help -> Welcome screen.

[Michał Rudolf]

Shouldn't the welcome document be set during the compilation?

[jsbien]

I don't think so. The default welcome document should be provided somewhere in the package - e.g in source/i18n/welcome/{pl, en}.djvu. A local adminsitrator or user should be able to override it by another document.

[Michał Rudolf]

Configurable welcome document. Closes #69.

→ <<cset e5223ae2b3ae>>

[Michał Rudolf]

Welcome document is not stored correctly in Preferences.

[Michał Rudolf]

Store welcome file path. Closes #69 again.

→ <<cset 46f35839b858>>