When a device is setup as a WiFi Access Point aka "hotspot", the standard
API for getting the WiFi settings returns nothing.  We have to use a
separate API to get the IP address of the WiFi AP.  As far as I could tell,
there is no public API for getting the SSID/BSSID of the WiFi AP, so for
now that is left blank.  That means the wifi screen in swap is confusing
because it will say it is not attached when the device is a hotspot

@mvdan's https://github.com/mvdan/libaccesspoint should help there

#193 https://gitlab.com/fdroid/fdroidclient/issues/193

To handle hotspots, this code will become more complicated.  Therefore,
first simplify things by putting all of the logic into one place, rather
than spread out across FDroidApp, the receiver, and the service

This method handles checking if the service is running, and only restarts
it if it was running.

On launch, we need to get the current state of the Wifi.  We only need to
start the WifiStateChangeService on WIFI_STATE_ENABLED, since any other
wifi state will be received by WifiStateChangeReceiver, which will launch
WifiStateChangeService when appropriate.

This reduces the chance that WifiStateChangeService will start when it is
not needed.

Before, it was keeping the last active wifi, which is confusing when you
are not connected.

I was getting frequent crash-on-rotate NullPointerExceptions after scanning
QR Codes.  This fixes it for me.

ConfirmReceiveSwapFragment is only ever used once in ConnectSwapActivity,
so it is a pointless abstraction.  It makes the code a lot more complicated
and also creates very complicated situations to handle when the screen is
rotated.  All of this gets much easier when everything is just included in
the Activity, since there is no problem being solved by the Fragments.
Fragments are for reusing chunks of UI in multiple places, or for showing
multiple chunks of UI in the same Activity.  Both of those cases can also
be handled, arguably better, without using Fragments:
https://corner.squareup.com/2014/10/advocating-against-android-fragments.html

This gets rid of the .updater package, which now only contains RepoUpdater

This has been discussed quite a bit now.  It is very easy to generate a
signed repo on the server, and supporting unsigned repos adds complexity
and security issues, including "BZ-01-002 TOFU Requests too easy to
recognize and intercept" from the audit.

https://gitlab.com/fdroid/fdroidserver/merge_requests/48
closes #12 https://gitlab.com/fdroid/fdroidclient/issues/12

* pub: is for searching by "Publisher Name":
  market://search?q=pub:Guardian%20Project

* pname: is an old way to specify "Package Name":
  market://search?q=pname:org.torproject.android

https://developer.android.com/distribute/tools/promote/linking.html

No need to have the version set it more than one place!

This fixes bad logic introduced in c52262a4

These needed to be pathPattern rather than path in order to make the
IntentFilter treat the .* as a regexp rather than a string literal.

On api 19 or later, writing to your own private directory on the SD doesn't
require any extra dependencies. We only ever store icons, apks and index stuff
on the private repo, so we never read/write anywhere else on the SD.

This basically removes public, static and final from interfaces since it's
always that way.

Add missing import

Without this gradle shows an error...

See merge request !72

String.replaceAll(String, String) isn't in-place!