Make sure segment value is decoded before sending in HTTP request through angular

Make sure segment value is decoded in piwik-api angular service before sending again in an HTTP request via angular. Otherwise, the segment will be double encoded.

Initialize extra fixture definitions properly in system test case setup before class.

[automatic translation update] Updated 101 strings in 4 languages (cs, es, nl, it)

Provide various release channels, eg let user choose between latest stable and LTS version

Add event that allows plugins to archive data even if there are no visits for the period.

This reverts commit a2f8768b.

started working on PHP 7 support

BTW: The method name Config::forceSave is kinda wrong as it does not
force anything, it saves only if there is a change

Added LogViewer as submodule + format a multi line log message into multiple log messages for file handler

Use $location.search to store & change currently viewed page in UI instead of stead of $location.path

Disable provider plugin by default

When converting the angular  result to a query string, make sure to take into account angular's behavior when multiple query parameters w/ the same name exist (ie, use the last one angular sees instead of using an array).