Those dependencies will be used by travis CI in other projects.
We want to avoid other project to need a ssh key to get them :
- To avoid spread(and maintenance) of ssh key.
- For PR coming from another repositories, ssh key is not available.
By making those dependencies available by http, we simplify the process.
Fix partially #34.
Archives download need to be updated in client projects.
If we want to build other projects (kiwix-lib, kiwix-tools) with travis,
it is better to have all dependencies already compiled.
kiwix-build project now compiles them and publishes the dependencies
archive at the right place where other projects can use them.
Make `kiwix-build.py` also fail if sub-command fail instead of just print
an error message and quit.
`kiwix-deploy.py` is far more simple and already fails miserably if a
sub-command fails.
Matthieu Gautier