Max priority for the onbootreceiver.

http://developer.android.com/reference/android/content/IntentFilter.html#SYSTEM_HIGH_PRIORITY
Merge branch 'feature/faster-autostart' into develop
Don't check cert validity if there is none.

For providers that don't allow anonymous eip, you have no certificate
until you log in, but the check validity method works before the log in.
Merge branch 'bug/Riseup-doesn't-start-from-scratch-#5981' into develop
Connected UI correctly restored correctly.
Merge branch 'bug/Changing-orientation-resets-eip-fragment-#5982' into develop
Handle NoSuchElementException in ProviderAPI.
Merge branch 'bug/NoSuchElementException-isn't-handled-in-ProviderAPI-#5983' into develop
Persistent tun activated.

Now the "Waiting for server reply" notification is shown along with
native Android's VPN notification. Next step: fix it.
Show a special notification while traffic is blocked.

When the user has already been connected to a VPN and she configured the
client to use persistent-tun, we should warn her that until the VPN
connection is again established, no traffic will flow.