Tomeu prefers ' for strings, so let's use it wherever we don't have a good
reason to use ".
Reviewed-by: James Cameron <quozl@laptop.org>
Acked-by: Simon Schampijer <simon@laptop.org>
CC: Aleksey Lim <alsroot@member.fsf.org>
The software updater was deleting ~/Activities when it encountered a bad
bundle. Two separate issues: we didn't sanity check the bundle root to
ensure it wasn't '.' or '..' or something crazy like that, and our "clean
up on failure" code was deleting the install_root instead of the activity
root (!). This was a regression introduced by the fix for #7733 in
commit db2d1c42e2481d6dbc15405840ac23e46eab7318 (0.82.2).
