replacing feedback link with About Piwik page giving us the possibility to write more about piwik and remove header message at least for non admin users. There is a lot of room for improvments
added footer from website, social icons still missing, maybe we better remove the menu links
switched privacy link with blog
Fix grammatical error
Tweak screenshot test output and allow global command line options to be overridden by individual test specs.
Merge pull request #242 from Proplex/patch-1

Fix grammatical error
Cheers for the fix
refs #4877 updated feedback email, always send english translation of the feature name
added social icons to about piwik page
About Piwik -> Help
fix update check and some header message display issues
do not underline check for updates link by default
smaller font size
made the help even smaller
increased gap above social buttons
simplify and make sure to display only to superusers or piwik demo users
Merge branch 'master' into about_piwik_page_experiment

Conflicts:
	lang/en.json
refs #4898 rate help and not about piwik page
refs #4898 display available update message to all users
refs #4898 let users directly email the super users in case of an available update
refs #4898 site -> Piwik