enables intercom contact and tracking
add intercom user hash
spacing
adds an option checkbox for intercom
spacing
remove some unnecessary code
reload page on settings change
add requirements class from compatibility branch and the server table output
refactoring
adds a button and a colourbox modal with server info
Merge branch 'master' into enable-intercom-support-366

Conflicts:
	admin/page.php
Merge branch 'refs/heads/master' into enable-intercom-support-366

Conflicts:
	backupwordpress.php

Also a bit of code cleanup
prefix functions
delete optin option on deactivate / delete
Code comments / formatting
Move the support opt-in flow to be part of the support button and generally improve things.
Merge branch 'enable-intercom-support-366' of github.com:humanmade/backupwordpress into enable-intercom-support-366

Conflicts:
	admin/actions.php
	backupwordpress.php
Use the new option name in deactivation and uninstallation
Plugin filename should be backupwordpress.php not plugin.php
Better name for the support schedule that is created to calculate the backup size