Don't webpack electron main, separate electron

* Don't webpack electron-main.js: no need to webpack in electron
 * Keep the electron file separate from the webapp, in their own
   'electron' directory

package.json

@@ -1,7 +1,7 @@
 {
   "name": "vector-web",
   "productName": "Riot",
-  "main": "vector/electron-main.js",
+  "main": "electron/src/electron-main.js",
   "version": "0.8.3",
   "description": "Vector webapp",
   "author": "matrix.org",
@@ -18,7 +18,7 @@
     "build:modernizr": "modernizr -c .modernizr.json -d src/vector/modernizr.js",
     "build:css": "catw \"src/skins/vector/css/**/*.css\" -o vector/components.css --no-watch",
     "build:compile": "babel --source-maps -d lib src",
-    "build:bundle": "NODE_ENV=production webpack",
+    "build:bundle": "NODE_ENV=production webpack -p lib/vector/index.js vector/bundle.js",
     "build:bundle:dev": "webpack --optimize-occurence-order lib/vector/index.js vector/bundle.js",
     "build:staticfiles": "cpx -v node_modules/olm/olm.js vector/",
     "build:electron": "build -lwm",
@@ -26,8 +26,8 @@
     "build:dev": "npm run build:staticfiles && npm run build:emojione && npm run build:css && npm run build:compile && npm run build:bundle:dev",
     "package": "scripts/package.sh",
     "start:emojione": "cpx \"node_modules/emojione/assets/svg/*\" vector/emojione/svg/ -w",
-    "start:js": "webpack -w",
-    "start:js:prod": "NODE_ENV=production webpack -w",
+    "start:js": "webpack -w src/vector/index.js vector/bundle.js",
+    "start:js:prod": "NODE_ENV=production webpack -w src/vector/index.js vector/bundle.js",
     "start:skins:css": "catw \"src/skins/vector/css/**/*.css\" -o vector/components.css",
     "start:staticfiles": "cpx -Lwv node_modules/olm/olm.js vector/",
     "//cache": "Note the -c 1 below due to https://code.google.com/p/chromium/issues/detail?id=508270",