Orphan block fix + other misc improvements

-The block sync will now remove orphaned block data from the txes collecton,  address balances/sent/received data as well as addresstx data and now stores limited info in a new orphans collection
-Added a new optional page for viewing orphaned block data
-The coinbase address now updates sent totals from POS rewards and other transactions that have vout but no vin addresses
-Block and transaction pages now display a warning when viewing an orphaned block or tx
-Added a couple new fields to the coinstats collection for tracking orphaned blocks
-Added new locale strings for the orphaned block feature

lib/database.js

@@ -5,6 +5,7 @@ var mongoose = require('mongoose'),
     Address = require('../models/address'),
     AddressTx = require('../models/addresstx'),
     Tx = require('../models/tx'),
+    Orphans = require('../models/orphans'),
     Richlist = require('../models/richlist'),
     Peers = require('../models/peers'),
     Heavy = require('../models/heavy'),
@@ -403,7 +404,13 @@ module.exports = {
         // collection has data
         // determine if last_usd_price field exists
         check_add_db_field(Stats, 'last_usd_price', 0, function(exists) {
-          return cb(true);
+          // determine if orphan_index field exists
+          check_add_db_field(Stats, 'orphan_index', 0, function(exists) {
+            // determine if orphan_current field exists
+            check_add_db_field(Stats, 'orphan_current', 0, function(exists) {
+              return cb(true);
+            });
+          });
         });
       } else
         return cb(false);
@@ -424,7 +431,9 @@ module.exports = {
     if (!skip) {
       var newStats = new Stats({
         coin: coin,
-        last: 0
+        last: 0,
+        orphan_index: 0,
+        orphan_current: 0
       });
 
       newStats.save(function(err) {
@@ -1068,7 +1077,9 @@ module.exports = {
                   supply: (supply ? supply : 0),
                   connections: (connections ? connections : 0),
                   last: (stats.last ? stats.last : 0),
-                  txes: (stats.txes ? stats.txes : 0)
+                  txes: (stats.txes ? stats.txes : 0),
+                  orphan_index: (stats.orphan_index ? stats.orphan_index : 0),
+                  orphan_current: (stats.orphan_current ? stats.orphan_current : 0)
                 });
               });
             } else {
@@ -1511,7 +1522,7 @@ module.exports = {
       if (tx && tx != 'There was an error. Check your console.') {
         lib.prepare_vin(tx, function(vin, tx_type_vin) {
           lib.prepare_vout(tx.vout, txid, vin, ((!settings.blockchain_specific.zksnarks.enabled || typeof tx.vjoinsplit === 'undefined' || tx.vjoinsplit == null) ? [] : tx.vjoinsplit), function(vout, nvin, tx_type_vout) {
-            lib.syncLoop(vin.length, function (loop) {
+            lib.syncLoop(nvin.length, function (loop) {
               var i = loop.iteration();
 
               // check if address is inside an array
@@ -1556,7 +1567,7 @@ module.exports = {
 
                   var newTx = new Tx({
                     txid: tx.txid,
-                    vin: nvin,
+                    vin: (vin == null || vin.length == 0 ? [] : nvin),
                     vout: vout,
                     total: total.toFixed(8),
                     timestamp: tx.time,
@@ -1582,5 +1593,19 @@ module.exports = {
     });
   },
 
+  // get the list of orphans from local collection
+  get_orphans: function(start, length, cb) {
+    // get the count of orphaned blocks
+    Orphans.find({}).countDocuments(function(err, count) {
+      // get the actual orphaned block data
+      Orphans.find({}).sort({blockindex: -1}).skip(Number(start)).limit(Number(length)).exec(function(err, orphans) {
+        if (err)
+          return cb([], count);
+        else
+          return cb(orphans, count);
+      });
+    });
+  },
+
   fs: fs
 };