refactor(jshint): reduce duplication & test all JS files

Conflicts:
	src/Angular.js
	src/AngularPublic.js
	src/jqLite.js
	src/ng/directive/input.js

lib/browser-stack/start-tunnel.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var fs = require('fs');
 var http = require('http');
 var BrowserStackTunnel = require('browserstacktunnel-wrapper');

lib/grunt/plugins.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var bower = require('bower');
 var util = require('./utils.js');
 var shelljs = require('shelljs');

lib/grunt/utils.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var fs = require('fs');
 var path = require('path');
 var shell = require('shelljs');

lib/promises-aplus/promises-aplus-test-adapter.js

@@ -1,4 +1,7 @@
-var isFunction = function isFunction(value){return typeof value == 'function';}
+/* global qFactory: false */
+'use strict';
+
+var isFunction = function isFunction(value){return typeof value == 'function';};
 
 var $q = qFactory(process.nextTick, function noopExceptionHandler() {});
 

lib/versions/version-info.js

@@ -1,10 +1,12 @@
+'use strict';
+
 var fs = require('fs');
 var path = require('path');
 var shell = require('shelljs');
 var semver = require('semver');
 var _ = require('lodash');
 
-var currentPackage, previousVersions, cdnVersion;
+var currentPackage, previousVersions, cdnVersion, gitRepoInfo;
 
 
 /**
@@ -154,14 +156,14 @@ var getCdnVersion = function() {
       }
       return cdnVersion;
     }, null);
-}
+};
 
 /**
  * Get the unstable snapshot version
  * @return {SemVer} The snapshot version
  */
 var getSnapshotVersion = function() {
-  version = _(previousVersions)
+  var version = _(previousVersions)
     .filter(function(tag) {
       return semver.satisfies(tag, currentPackage.branchVersion);
     })