ics-openvpn is now officially on GitHub, and they track openssl and
openvpn as submodules, so it's easier to update everything. Just a git
submodule update --recursive.

I've also set up soft links to native modules from ics-openvpn in app,
so that we don't copy files in Gradle (which was causing problems with
the submodules .git* files, not being copied). That makes the repo
cleaner.

Give more time to provider details fragment to appear, because debugging makes the code run slowly.

Updated butterknife, dagger, renderers, fabbuton and gson, as well as
gradle plugin.

The FabButton doesn't scale the icon as big as I want it to be, and it
doesn't let me set the size to "wrap_content" because the library sets
the sizes to match_parent.
I'm going to try to modify my fork of FabButton to see if I can obtain
what I want in its demo: just an icon and the progress indicator, the
icon as big as possible.