This commit fixes tag_previews not functioning by changing 2 things:
1. Disabling focusonclick patch (possible conflict with tag_previews
despite bakkeby said during a Discord discussion, action is taken
immediately as well to fix the conflict.
2. Adding hover functionality to taglabels.
For now, focusing windows relies on mouse hover, not click. Unless if a
fix was provided, this would be normal dwm functionality.
Alexis Jhon Gaspar