Improve logging in automation tests

Each line of logs should contain:

[datetime][threshold][TestClass][testMethod][ClassThatWritesLogs] - Log Message

• datetime - already is there, but should not show milliseconds
• threshold - is already there
• TestClass - without the package. Example: SignUpTest. Use Slf4j MDC to implement this.
• testMethod - use Slf4j MDC to implement this
• ClassThatWritesLogs - same as now, but the amount of letters may be decreased.
• Log Message - same as now

Also:

• thread info should be removed, it doesn't provide useful info right now

Example:

[2013-08-04 08:25:28][INFO ][SignUpTest][usernameContainsSlashShouldPassRegistration_JC_4][webdriver.action.Users] - Sign Up User[passwordConfirmation=P_uwsq8dwhpjdft,username=/P_uwsq8d,email=P_uwsq8dwhpj@jtalks.org,password=P_uwsq8dwhpjdft]