increase default fee per kb values + add urgent level

lib/common/defaults.js

@@ -25,21 +25,26 @@ Defaults.MAX_MAIN_ADDRESS_GAP = 20;
 Defaults.SCAN_ADDRESS_GAP = Defaults.MAX_MAIN_ADDRESS_GAP + 20;
 
 Defaults.FEE_LEVELS = [{
+  name: 'urgent',
+  nbBlocks: 2,
+  multiplier: 1.5,
+  defaultValue: 150000,
+}, {
   name: 'priority',
   nbBlocks: 2,
-  defaultValue: 50000
+  defaultValue: 100000
 }, {
   name: 'normal',
   nbBlocks: 3,
-  defaultValue: 40000
+  defaultValue: 80000
 }, {
   name: 'economy',
   nbBlocks: 6,
-  defaultValue: 25000
+  defaultValue: 50000
 }, {
   name: 'superEconomy',
   nbBlocks: 24,
-  defaultValue: 10000
+  defaultValue: 20000
 }];
 
 Defaults.DEFAULT_FEE_PER_KB = Defaults.FEE_LEVELS[1].defaultValue;