Suggested by Florian, thanks!

found and reported by Florian, thanks!

~/.telescope/session was parsed in the main process before dropping in the sandbox: that's no good. This moves the initialization of the ui events later in ui_main_loop and makes so that the fs process, after entering the sandbox, parses and sends the content of the last session back to the main process; when it's done the ui gets loaded and telescope is back rocking. I'm plannig to re-use the struct session_tab during the save session operation soon.

The idea is to handle better non-displayable pages (like images), and keeping the old page until the server replies is the first step. It also simplifies the memory management btw.

Use XDG-compliant paths unless ~/.telescope already exists. Provide a script to migrate to XDG-style directory for users who wish to do so.

When enabled with the -S (or --safe) flag, prevent telescope from writing files to the disk.

improve the download procedure by pre-filling the minibuffer with /tmp/<file-name>. At the moment ``/tmp/'' is hardcoded. Idea from a conversation with hurricane, thanks!