No more libappindicator3-dev at debian

[raveit65]

Expected behaviour

Someone who is using debian should fix this problem.

Actual behaviour

No more libappindicator3-dev at debian.
Travis CI build is disable for debian, see 44c8a5b

Steps to reproduce the behaviour

MATE general version

Package version

Linux Distribution

Debian

Link to bugreport of your Distribution (requirement)

[lukefromdc]

Which version of Debian?
I have Debian Unstable and just sucessfully test reinstalled libappindicator-3-dev_0.4.98-8_amd64.deb
This is an old package (originally got it a year ago) but is still marked by synaptic as available and I was able to reinstall it.

[raveit65]

The already posted link to our travis config shows you that we are using DISTRO="debian:testing.
Last failed build was https://travis-ci.org/github/mate-desktop/mate-polkit/jobs/762015390#L231

E: Unable to locate package libappindicator3-dev

The command "./docker-build --name ${DISTRO} --config .build.yml --install" failed and exited with 1 during .

In another package we offer the option to build with both, libappindicator3 and libatjana or what ever this debian-only package called.

[pacho2]

This should be solved by:
#41