List bookmarks in A->Z in "Manage Bookmarks"

[Neustradamus]

Right click on the username -> Groupchat -> List is not in A->Z Same in "Manage Bookmarks".

Can you change it?

[Neustradamus]

Commits done by @Ri0n, thanks:

• https://github.com/psi-im/psi/commit/7bb2093b762d420bdeb3a429799fb59d8b828280
• https://github.com/psi-im/psi/commit/b7e5e39948b4faf9332f77bbb50758c8bcc7bdda

[Neustradamus]

Currently:

• Right click on the username -> Groupchat -> List is in A->Z
• "Psi: Join Groupchat" -> List is in A->Z
• "Manage Bookmarks" -> List is not in A->Z

One step is missing ^^