Add logic for eth.js to deploy Plasma Chains

Changes:
- Use Web3.utils instead of importing eth.js in multiple files
- Add timeout before tests start -- this is because now startup takes
too long
- Add some config options
- Suppress node warning coming from a web3 bug. See:
web3/web3.js#1648

config-test.json

@@ -1,4 +1,7 @@
 {
   "dbDir": "./db-test/",
-  "plasmaNetworkAddress": "0x0000000000000000000000000000000000000000"
+  "plasmaRegistryAddress": "0x0000000000000000000000000000000000000000",
+  "operatorAddress": "0x0000000000000000000000000000000000000000",
+  "operatorIpAddress": "0.0.0.0",
+  "web3Provider": ""
 }

config.json

@@ -1,4 +1,7 @@
 {
   "dbDir": "./db/",
-  "plasmaNetworkAddress": "0x0000000000000000000000000000000000000000"
+  "plasmaRegistryAddress": "0x0000000000000000000000000000000000000000",
+  "operatorAddress": "0x0000000000000000000000000000000000000000",
+  "operatorIpAddress": "0.0.0.0",
+  "web3Provider": ""
 }

package.json

@@ -7,8 +7,8 @@
     "start": "node src/app.js",
     "clean": "rm -rf db",
     "interactive": "node",
-    "test": "mocha --timeout 15000 --recursive",
-    "test-debug": "mocha debug --timeout 15000 --recursive"
+    "test": "env CONFIG='./config-test.json' NODE_ENV='test' mocha --timeout 15000 --recursive",
+    "test-debug": "env CONFIG='./config-test.json' NODE_ENV='test' mocha debug --timeout 15000 --recursive"
   },
   "repository": {
     "type": "git",
@@ -44,6 +44,7 @@
     "leveldown": "^4.0.1",
     "levelup": "^3.1.1",
     "lodash": "^4.17.11",
+    "plasma-contracts": "git+ssh://[email protected]/karlfloersch/plasma-contracts.git",
     "plasma-utils": "git+ssh://[email protected]/plasma-group/plasma-utils.git",
     "web3": "^1.0.0-beta.37"
   }