Fix: #1217 Text Modifications, Bug Fix, and Feature Flags

[frimpongopoku]

Summary / Highlights

• [x] 1. Please put the menu editing option behind a feature flag. We may decide to allow all communities or just some to do this. Now under a feature flag with key customize-navigation-menu-feature-flag. So simply create a flag with name Customize Navigation Menu
• [x] 2. Change "Configure Navigation System" to "Customize User Portal Navigation (Advanced)"
• [x] 3. Change "Brand Customization" to "Community Logo"
• [x] 4. When editing a menu item the dialog should say "Edit Menu Item" instead of "Create New Menu Item"
• [x] 5. At first when I created a new external menu item, it showed on the page as "Not Live" but in the dialog it was"Live"

Details (Give details about what this PR accomplishes, include any screenshots etc.)

Testing Steps (Provide details on how your changes can be tested)

Requirements

• [x] I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• [x] I've tested my changes manually.
• [ ] I've added unit tests to my PR.

Transparency (Project board)

• [x] I've given my PR a meaningful title.
• [x] I linked this PR to the relevant issue.
• [x] I moved the linked issue from the "Sprint backlog" to "In progress" when I started this.
• [ ] I moved the linked issue to "QA Verification" now that it is ready to merge.

What kind of change does this PR introduce? (check at least one)

• [x] Bugfix
• [ ] Feature
• [ ] Performance improvement
• [ ] Feature removal
• [ ] Code style update
• [ ] Refactor
• [ ] Docs
• [ ] Build-related changes
• [ ] Other, please describe:

Does this PR introduce a breaking change? (check one)

• [ ] Yes
• [x] No

If yes, please describe the impact and migration path for existing applications:

The PR fulfills these requirements:

• [x] It's submitted to the dev branch or to a feature branch, not the main branch
• [ ] When resolving a specific issue, it's referenced in the PR's title (e.g. fix #xxx[,#xxx], where "xxx" is the issue number)
• [ ] All tests are passing: Contributing Guidelines
• [ ] New/updated tests are included

Other information: Any otherthing we need to know

[boatengjephthah27]

• [x] 1. Please put the menu editing option behind a feature flag. We may decide to allow all communities or just some to do this. Now under a feature flag with key customize-navigation-menu-feature-flag. So simply create a flag with name Customize Navigation Menu

@frimpongopoku

This requirement is ticked as done, however, the current implementation doesn't seem to have it. I believe feature flags are to be used to provide customized features we want accessible to certain communities. Though the checkbox is ticked as complete, I don't see any such feature flag as Customize Navigation Menu in the feature flags list, yet from the test done the feature seems accessible to all communities.