tracbuildbot/buildbot_cache.py: fixed type of log messages.
tracbuildbot/buildbot_cache.py: removed junk.
tracbuildbot/timeline.py: fixed unuseful "Log" in event description.
tracbuildbot/buildbot_cache.py: some improvements.
Updated readme.
tracbuildbot/buildbot_api.py: fixed AttributeError: address on buildbot page.
tracbuildbot/web_ui.py: fixed 404 on buildbot page for builders with no builds.
tracbuildbot/web_ui.py: moved getting and rendering info to js.

Also:
- added auto refresh;
- remove rerouting on "build" button;
- added notification on "build" button.
setup.py: added auto on for component environmentSetup(need for timeline).
tracbuildbot/htdocs/js/buildbot.js: fixed "error_log" ref.
README.md: fixed buildbot first version with jsonapi.
README.md: rewrited.
tracbuildbot/admin.py: "fixed" decode connection error msg.
tracbuildbot/admin.py: removed junk.