Reduce minimum gas price to 100 MWEI

Also now representing gas price in MWEI, because our current bn inputs actually aren't tolerant of minimums less than 1 unit.

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Current Master
 
 - Add support for alternative ENS TLDs (Ethereum Name Service Top-Level Domains).
+- Lower minimum gas price to 0.1 GWEI, now shown as 100 MWEI.
 
 ## 3.11.2 2017-10-21
 

ui/app/components/pending-tx.js

@@ -15,9 +15,9 @@ const addressSummary = util.addressSummary
 const nameForAddress = require('../../lib/contract-namer')
 const BNInput = require('./bn-as-decimal-input')
 
-const MIN_GAS_PRICE_GWEI_BN = new BN(1)
-const GWEI_FACTOR = new BN(1e9)
-const MIN_GAS_PRICE_BN = MIN_GAS_PRICE_GWEI_BN.mul(GWEI_FACTOR)
+const MIN_GAS_PRICE_MWEI_BN = new BN('100')
+const MWEI_FACTOR = new BN(1e6)
+const MIN_GAS_PRICE_BN = MIN_GAS_PRICE_MWEI_BN.mul(MWEI_FACTOR)
 const MIN_GAS_LIMIT_BN = new BN(21000)
 
 module.exports = PendingTx
@@ -197,10 +197,10 @@ PendingTx.prototype.render = function () {
                 h(BNInput, {
                   name: 'Gas Price',
                   value: gasPriceBn,
-                  precision: 9,
-                  scale: 9,
-                  suffix: 'GWEI',
-                  min: MIN_GAS_PRICE_GWEI_BN.toString(10),
+                  precision: 6,
+                  scale: 6,
+                  suffix: 'MWEI',
+                  min: MIN_GAS_PRICE_MWEI_BN.toString(10),
                   style: {
                     position: 'relative',
                     top: '5px',