Changed JavaScript Tracking Code generation to use "//", instead of verifying whether the site is using "https", or not, and generating a corresponding URL.

"//" has been part of the RFC for well over 18 years. It has been confirmed to work in all major browsers (Firefox, Chrome, IE, Opera).

References:
- RFC 1808 Section 4: http://www.ietf.org/rfc/rfc1808.txt
- RFC 3986 Section 5.2: http://www.ietf.org/rfc/rfc3986.txt
- Stack Overflow QA 1: http://stackoverflow.com/q/4659345/238722
- Stack Overflow QA 2: http://stackoverflow.com/q/6785442/238722
First attempt at fixing failing tests.
Merge branch 'master' of https://github.com/piwik/piwik
Missed one correction on the failing tests.
Removing pre PHP 5.3 checks
Update testMinimumPhpVersion.php
Update testMinimumPhpVersion.php
Update testMinimumPhpVersion.php
Update testMinimumPhpVersion.php
fixes #6114 - fixed name of Norwegian Bokmål
refs #6114 - fixed name of Norwegian Bokmål
language update  refs #3430
Merge pull request #6117 from piwik/translationupdates

[automatic translation update] Updated 129 strings in 6 languages (fa, tr, ru, cs, ja, nl)
Merge pull request #6084 from ThaDafinser/patch-5

Removing pre PHP 5.3 checks
2.6.0-rc1
Added the protocol-agnostic URL format to the Tracker's fallback image.
Fixes #6092: if plugin.isActivated is not defined, assume false in CorePluginsAdmin/templates/macros.twig. Happens in Marketplace::getPluginsHavingUpdate() when plugin w/ update is not $loadedPlugins. Not sure why it happens.
Refs #6092, last related commit probably won't fix the issue, this should do it.
Fix opt out iframe and add screenshot test to ensure we don't regress
Merge remote-tracking branch 'origin/master'