ui: Fix project theme on reload or refresh

[yadvr]

On UI refresh or opening in new tab, if project is selected also toggle the theme to match dark/light as per project vs default view. Also picks css fixes from main branch.

Fixes ##7736

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)

[yadvr]

How I tested this:

• In old 4.18, create a project and select it; now refresh the UI -> the nav bar goes light (from dark)
• With this fix, create a project and select it; now refresh the UI -> the nav bar goes dark per the select project ID (if it's default view, it stays light theme)

[yadvr]

@blueorangutan ui

[blueorangutan]

@rohityadavcloud a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[blueorangutan]

UI build: ✔️
Live QA URL: https://qa.cloudstack.cloud/simulator/pr/7893 (QA-JID-157)

[weizhouapache]

verified ok

[codecov]

Codecov Report

Merging #7893 (b1b7097) into 4.18 (db0e7a6) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               4.18    #7893      +/-   ##
============================================
- Coverage     13.06%   13.06%   -0.01%     
+ Complexity     9084     9083       -1     
============================================
  Files          2720     2720              
  Lines        257289   257289              
  Branches      40116    40116              
============================================
- Hits          33612    33610       -2     
- Misses       219455   219458       +3     
+ Partials       4222     4221       -1     

see 1 file with indirect coverage changes

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[shwstppr]

Code LGTM. Tested on QA