Consistent naming for tests
Summary:
Satisfy my OCD by having a consistent naming scheme for all the tests.
Also make sure the binary and test targets have the same name in all
cases (except the ones running under akonaditest as usual).
I feel much better now. :-)
Reviewers: Zanshin, bensi, dfaure
Differential Revision: https://phabricator.kde.org/D3881