Bug fixes for mocking data

[enuchi]

Description

• FIx csp directives to include dev proxy server port.
• Fix path joining in state config.

Motivation and Context

Solves csp directives not including dev proxy server port.
Solves incorrect double slash // in path naming.

How Has This Been Tested?

Includes tests to validate desired behavior.

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation (adding or updating documentation)

Checklist:

• My change requires a change to the documentation and I have updated the documentation accordingly.
• These changes should be applied to a maintenance branch.
• This change requires cross browser checks.
• Performance tests should be ran against the server prior to merging.
• This change impacts caching for client browsers.
• This change impacts HTTP headers.
• This change adds additional environment variable requirements for One App users.
• I have added the Apache 2.0 license header to any new files created.

What is the Impact to Developers Using One App?

Dev proxy server port should appear on csp directives, allowing proper testing with parrot.
Allows defining paths in mock endpoints with leading or no leading slash.

[CLAassistant]

All committers have signed the CLA.

[enuchi]

Sorry, had to rewrite commits to add email address so I could add signed CLA. @JamesSingleton can you pull in master again if needed?

[JamesSingleton]

Here is the bundle size report:

📊 Bundle Size Report

file name	size on disk	gzip
app.js	112.7KB	31.4KB
runtime.js	15KB	5.3KB
vendors.js	128.1KB	37.9KB
app~vendors.js	403.5KB	105.2KB
legacy/app.js	119.4KB	33KB
legacy/runtime.js	15KB	5.3KB
legacy/vendors.js	163KB	44.8KB
legacy/app~vendors.js	409.8KB	106.9KB