fix report hour is not readable on Firefox

Updating log importer submodule for https://github.com/piwik/piwik-log-analytics/pull/71 (better diagnostics).

Set defaultReport to load user preference only if user has actually at least view permission to one site, so the user preference will not be an empty string.

Tracker: Faster visitor recognition

Better tooltip for Live visitors button

Fixes #7708, in summary of XHProf output message, display warning if development mode is enabled.

updated css for no report

Goal url parameter was wrong when generating image tracking code

Why? I would simply remove those methods but we might want to release a Piwik 2.13.1 soon and I don't want to remove those methods in a patch version update.

Fixes #7802, fix adding a site is not possible when coming from All Websites Dashboard

Fixes #7806, fix All websites dashboard lists website names double encoded error.

Fixes #7818 make sure MultiSites.getAll handles showColumns correctly when a comma separated list is used instead of an array of strings.

fixes #7827

Fix report date to load by default, make sure default period is set using actual user preference and not using date inferred from user preference.

Make sure PATH in php-fpm processes is affected by phpenv (by forwarding PATH from travis.sh script). This keeps HHVM from being used inadvertently in system tests.