* fixed bug causing onionr to usually only have 1 peer at once

* do not crash when loading new peer profile
* removed code for defunct *address* proof of work
+ added maxStoredPeers and maxConnect config options (TODO)
+ added lastConnectAttempt to address db
+ added command to cause instant peer exchange
+ added connectCheck.txt for TODO connection testing

onionr/static-data/connect-check.txt

@@ -0,0 +1 @@
+https://3g2upl4pq6kufc4m.onion/robots.txt,http://expyuzz4wqqyqhjn.onion/robots.txt,https://onionr.voidnet.tech/

onionr/static-data/default_config.json

@@ -57,6 +57,8 @@
         "blockCacheTotal" : 50000000
     },
     "peers":{
-        "minimumScore": 5
+        "minimumScore": 5,
+	"maxStoredPeers": 100,
+	"maxConnect": 3
     }
 }