refactor: update angular to support TypeScript 2.4

Detailed updates:
- rxjs@5.0.x
- tsickle@0.24.x
- typescript@2.4.x
- @bazel/typescript@0.10.0
- protractor@5.1.x
- selenium-webdriver@3.0.x

BREAKING CHANGE:
- the Angular compiler now requires TypeScript 2.4.x.

packages/tsc-wrapped/test/symbols_spec.ts

@@ -97,7 +97,7 @@ describe('Symbols', () => {
       switch (node.kind) {
         case ts.SyntaxKind.VariableStatement:
         case ts.SyntaxKind.VariableDeclarationList:
-          return ts.forEachChild(node, visit);
+          return !!ts.forEachChild(node, visit);
         case ts.SyntaxKind.VariableDeclaration:
           const variableDeclaration = <ts.VariableDeclaration>node;
           const nameNode = <ts.Identifier>variableDeclaration.name;