Make SASS more independent of file structure

package.json

@@ -22,7 +22,7 @@
     "angular-ui-bootstrap": "~1.2.1",
     "angular-ui-codemirror": "jpetitcolas/ui-codemirror#di",
     "angular-ui-router": "^0.2.14",
-    "bootstrap-sass": "^3.3.4",
+    "bootstrap-sass": "^3.3.7",
     "codemirror": "^5.2.0",
     "core-js": "^0.6.1",
     "es6-promise": "^2.3.0",
@@ -51,11 +51,11 @@
     "babel-preset-es2015": "^6.14.0",
     "babel-preset-stage-2": "^6.13.0",
     "chai": "^3.3.0",
-    "css-loader": "^0.12.0",
+    "css-loader": "^0.25.0",
     "exports-loader": "^0.6.2",
     "extract-text-webpack-plugin": "^0.8.0",
     "fakerest": "^1.1.4",
-    "file-loader": "^0.8.1",
+    "file-loader": "^0.9.0",
     "html-loader": "^0.3.0",
     "jasmine": "~2.4.1",
     "jasmine-core": "~2.4.1",
@@ -71,16 +71,16 @@
     "mocha": "^2.1.0",
     "ng-annotate-loader": "0.0.2",
     "ngtemplate-loader": "^1.3.0",
-    "node-sass": "^3.4.2",
+    "node-sass": "^3.9.3",
     "phantomjs-prebuilt": "~2.1.4",
     "protractor": "~3.1.1",
-    "sass-loader": "^0.5.0",
+    "sass-loader": "^4.0.2",
     "sinon": "~1.14.1",
-    "style-loader": "^0.12.2",
+    "style-loader": "^0.13.1",
     "superagent": "^0.18.2",
     "url-loader": "^0.5.5",
-    "webpack": "^1.10.0",
-    "webpack-dev-server": "^1.10.1"
+    "webpack": "^1.13.2",
+    "webpack-dev-server": "^1.15.1"
   },
   "engines": {
     "node": ">=4.2.0"