Make list of memo sources scrollable
@mcrha
Submitted by Milan Crha Link to original bug (#744663)
Description
I have plenty of Memos configured in Evolution, and when I open Preferences in bijiben, the list of "Primary Book" ('primary book' feels like a typo) is not a scrollable, neither a tree (this is not that important), thus the window expands too much.
I suggest to pack the list of available Memos into a scrollable window to avoid the window's expansion.
Version: 3.15.x