Added native Bazel build to GUI2. Reduced a lot of the unused Angular CLI structures

Reviewers should look at the changes in WORKSPACE, BUILD, BUILD.bazel, README.md files
This is only possible now as rules_nodejs went to 1.0.0 on December 20
gui2 has now been made the entry point (rather than gui2-fw-lib)
No tests or linting are functional yet for Typescript
Each NgModule now has its own BUILD.bazel file with ng_module
gui2-fw-lib is all one module and has been refactored to simplify the directory structure
gui2-topo-lib is also all one module - its directory structure has had 3 layers removed
The big bash script in web/gui2/BUILD has been removed - all is done through ng_module rules
in web/gui2/src/main/webapp/BUILD.bazel and web/gui2/src/main/webapp/app/BUILD.bazel

Change-Id: Ifcfcc23a87be39fe6d6c8324046cc8ebadb90551
diff --git a/web/gui2/src/main/webapp/app/view/host/hostdetails/hostdetails.component.ts b/web/gui2/src/main/webapp/app/view/host/hostdetails/hostdetails.component.ts
index 5e70270..50af4f6 100644
--- a/web/gui2/src/main/webapp/app/view/host/hostdetails/hostdetails.component.ts
+++ b/web/gui2/src/main/webapp/app/view/host/hostdetails/hostdetails.component.ts
@@ -21,7 +21,7 @@
     LogService,
     DetailsPanelBaseImpl,
     WebSocketService
-} from 'gui2-fw-lib';
+} from '../../../../../../../../gui2-fw-lib/public_api';
 
 /**
  * The details view when a host row is clicked from the Host view
@@ -39,7 +39,7 @@
     selector: 'onos-hostdetails',
     templateUrl: './hostdetails.component.html',
     styleUrls: ['./hostdetails.component.css',
-        '../../../fw/widget/panel.css', '../../../fw/widget/panel-theme.css'
+        '../../../../../../../../gui2-fw-lib/lib/widget/panel.css', '../../../../../../../../gui2-fw-lib/lib/widget/panel-theme.css'
     ],
     animations: [
         trigger('hostDetailsState', [