- new user_id field to contain the raw user id value
- new &uid= tracker api parameter
- add userId to Live API output
- added integration test

…ndors to keep builds light

…is may fail the test with changes in Tracker.php

…ration tests + doc blocks

…ting user is anonymous

… and Last visits widget link/tooltip opening the Visitor profile

Conflicts:
	core/Version.php
	misc/package/build.sh

…s. Means "Active Users". Displayed in Visitors Overview, in metrics picker, in API response, in Metadata

… as this is not a valid operation.

…ports + fix some tests

…_* to also affect the nb_uniq_users metric processing over periods, + only show Users metrics when it's greater than zero, + fix more tests and renamed test suite to UserIdAndVisitorIdTest

and restore Transitions tests which I deleted by mistake earlier

…ome reason the column does appear by default but in the backwardsCompatibilityTest it does not appear there. Also had to manually activate and install plugins in the test case for some reason. Message was:

```
Exception: Failed to update database (errors or warnings found): Array
(
    [warnings] => Array
        (
        )

    [errors] => Array
        (
            [0] => /home/matt/dev/piwik-master/plugins/CustomAlerts/Updates/0.0.2.php:
Error trying to execute the query 'ALTER TABLE `alert` CHANGE `enable_mail` `email_me` BOOLEAN NOT NULL'.
The error was: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'piwik_tests.alert' doesn't exist
        )

    [coreError] =>
    [deactivatedPlugins] => Array
        (
            [0] => CustomAlerts
        )

)

```

…tion #344  adding optout iframe screenshot