RC - Release candidate 1.4.0rc1

- moved to semantic versioning, e.g. `major`.`minor`.`patch`;
- added `rc1` suffix for release candidate;
- added `extras_require` entry to `setup.py`; and
- deleted redundant `sonar-project.properties`.

The `extras_require` entry allows `testing` and `setup` packges to be
installed, for example `pip install -e .[testing]` will install fido with
its `tests_require` packages also. `pip install -e .[setup]` installs the
`setup_requires` packages. `pip install -e .[testing,setup]` works as you'd
hope :).

fido/__init__.py

@@ -14,7 +14,7 @@
 from six.moves import input as rinput
 
 
-__version__ = '1.4'
+__version__ = '1.4.0rc1'
 
 
 CONFIG_DIR = join(abspath(dirname(__file__)), 'conf')

setup.py

@@ -41,6 +41,10 @@ def find_version(*file_paths):
     'pytest',
 ]
 
+EXTRAS = {
+    'testing': tests_require,
+    'setup': setup_requires,
+}
 
 setup(
     name='opf-fido',
@@ -53,6 +57,7 @@ def find_version(*file_paths):
     install_requires=install_requires,
     setup_requires=setup_requires,
     tests_require=tests_require,
+    extras_require=EXTRAS,
     packages=['fido'],
     package_data={'fido': ['*.*', 'conf/*.*']},
     entry_points={'console_scripts': [