[UserConfigView] Show a message when the logger is created.
[client] Receive logs both from the hatohol and the viewer modules.
[UserConfigView][test] Use the port that is different from the default port of Hatohol server.

This patch avoids a conflict when a hatohol server is running
on the host.
[client][hatoholserver] Can specify a Hatohol server address by the environment varible.
[client][hatoholserver][test] Add a new test: test_get_address_with_env().
[client][hatoholserver] Fix the problem that cannot update the internal variables correctly when _setup() is called.
[client][hatoholserver][test] Add a new test: test_get_default_port().
[TestHaotholserver] Fix a typo.

TestHaotholserver ->
TestHatoholserver
[hatoholserver][test] Make sure that environment variables concerned with the test doesn't exist.
[hatoholserver][test] Add a new test: test_get_address_with_env().
[hatoholserver] Define constants to avoid hard-coded strings from being used, which degrades flexibility.
[doc][client] Add required commands to test client code.
[doc][server][test] Add a hint to avoid the problem in which some tests that makes a child process crash fails.
[HaotholConnector] Make the description of the function parameters more visible.
Merge branch 'issue58' of github.com:project-hatohol/hatohol into issue58
[HaotholConnector][comment] Fix a wrong description.
[HaotholConnector][comment] Make indent thin so that the space for descriptions is wide.
[HaotholConnector][comment] Use an appropriate word.
[HatoholConnector] Add a new parameter: pathPrefix that enables to access path other than /tunnel/...
[client][url] Import a package for a test only when the debug mode to avoid is from being imported in a normal operation.