First test for diaspy.people.User() object
Merge branch 'streams' into people
Improvements in `User()`, new tests, updated information about tests
Changes in tests configuration, small refactoring of `User()`
Tests updated
Merge branch 'people' into streams

Conflicts:
	tests.py
One-to-rule-them-all version of `post()` method (with tests)
`Client()` is now ruling-em-all with one post method
Manual updated for posting and stream