Simplify install state checking

src/freedombone-app-babel

src/freedombone-app-batman

src/freedombone-app-blog

src/freedombone-app-blogstatic

src/freedombone-app-cjdns

src/freedombone-app-dlna

src/freedombone-app-emacs

src/freedombone-app-gnusocial

src/freedombone-app-gogs

src/freedombone-app-hubzilla

src/freedombone-app-irc

src/freedombone-app-librevault

src/freedombone-app-mediagoblin

src/freedombone-app-mumble

src/freedombone-app-rss

src/freedombone-app-searx

src/freedombone-app-sip

src/freedombone-app-syncthing

src/freedombone-app-tahoelafs

src/freedombone-app-tox