Update angular to 1.8.0

[shamrickus]

What does this PR (Pull Request) do?

• This PR is not related to any Issue. It updates angular to the latest version.

There was a breaking change in angular 1.8.0 to jqLite, however we do not use jqLite. It comes built-in with angular; however, it gets superseded by a loaded jQuery.

Which Traffic Control components are affected by this PR?

• Traffic Portal

What is the best way to verify this PR?

Run integration tests.
Ensure TP loads and appears to look/work correctly.

The following criteria are ALL met by this PR

• This PR includes tests OR I have explained why tests are unnecessary
• This PR includes documentation OR I have explained why documentation is unnecessary
• This PR includes an update to CHANGELOG.md OR such an update is not necessary
• This PR includes any and all required license headers
• This PR ensures that database migration sequence is correct OR this PR does not include a database migration
• This PR DOES NOT FIX A SERIOUS SECURITY VULNERABILITY (see the Apache Software Foundation's security guidelines for details)

Additional Information

Notes:

## Breaking Changes

### **jqLite** due to:
  - **[2df43c](https://github.com/angular/angular.js/commit/2df43c07779137d1bddf7f3b282a1287a8634acd)**: prevent possible XSS due to regex-based HTML replacement

## Bug Fixes
- **jqLite:**
  - prevent possible XSS due to regex-based HTML replacement
  ([2df43c](https://github.com/angular/angular.js/commit/2df43c07779137d1bddf7f3b282a1287a8634acd))
- **angular.merge:** do not merge __proto__ property
  ([726f49](https://github.com/angular/angular.js/commit/726f49dcf6c23106ddaf5cfd5e2e592841db743a))
- **ngStyle:** correctly remove old style when new style value is invalid
  ([5edd25](https://github.com/angular/angular.js/commit/5edd25364f617083363dc2bd61f9230b38267578),
  [#16860](https://github.com/angular/angular.js/issues/16860),
  [#16868](https://github.com/angular/angular.js/issues/16868))

[mitchell852]

lgtm. builds fine and runs fine.