* Bump electronbuilds/electron* versions
The linux-appname branch has been gathering dust for awhile.
Some of the versions in `master` are higher, and some of the
versions in `linux-appname` are higher to add libnotify.
This commit takes the higher of the two numbers in each case.
* Add libnotify to the Dockerfiles
It appears that the arm build failing with a core dump is a false positive. Testing the latest arm build from master on a raspberry pi 2, it does not core dump.
Note that our CI server is not ready for mips64el yet, so the binaries
of libcc are not available yet. Currently it is downloading the binaries
created by me manually, we should redirect to the official mirror before
merging this PR.
