Allow compact view for left column and allow resizable columns (HiDPI)
On my HiDPI laptop, Geary shows rows in the left column with way more height than is necessary. This left bar is also flawed in terms that it isn't resizable (see #1029 (closed), which I am not sure why is closed)
On that issue, the rows are a reasonable height to about the text height plus some padding.
However, this is not the case and these rows take up my entire display height:
Also, as noted in #1029 (closed), these columns used to be resizable, but were changed to a fixed width. This harms the overall minimalist design and wastes valuable screen real estate.