ensure /var/lib/wikibugs dir exists (home dir for user)

PS2: fix quoting (quote resource titles and file modes,
     single quotes if no variables, double quotes if vars)
Change-Id: Ia23806e77f4cdbf12ed41c4d9f29449094a8817c
Merge "ensure /var/lib/wikibugs dir exists (home dir for user)" into production