Expanded Time List enhancements for #8091

[charlesh88]

(Partially) closes #8091 - this is the Time List part of that issue.

This should be looked over by a developer for functional issues. For example, how I implemented the Plan colors - there is probably a more resource-efficient way that could be done.

Describe your changes:

• Significant markup and CSS changes.
• Revised and greatly simplified execution status and time context labels.
• Activities now use Plan colors.
• Greatly improved layout and wrapping for narrow spaces.
• Added new global data uri's for status icons.
• Added new global 6 step gear-spinner animation for in-progress Activity status icon.
• Added new global absCenter mixin.
• Revised, refined past/current/future styling and theme colors.
• Status icon coloring added to theme constants.
• Updated other themes constants for new approach to bg/fg/em.
• Smoke tested in Espresso and Snow themes.

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Is this a notable change that will require a special callout in the release notes? For example, will this break compatibility with existing APIs or projects that consume these plugins?

Author Checklist

• Changes address original issue?
• Tests included and/or updated with changes?
• Has this been smoke tested?
• Have you associated this PR with a type: label? Note: this is not necessarily the same as the original issue.
• Have you associated a milestone with this PR? Note: leave blank if unsure.
• Testing instructions included in associated issue OR is this a dependency/testcase change?

Reviewer Checklist

• Changes appear to address issue?
• Reviewer has tested changes by following the provided instructions?
• Changes appear not to be breaking changes?
• Appropriate automated tests included?
• Code style and in-line documentation are appropriate?

[codecov]

Codecov Report

Attention: Patch coverage is 5.26316% with 18 lines in your changes missing coverage. Please review.

Project coverage is 57.34%. Comparing base (826c713) to head (2d2d41e).

Files with missing lines	Patch %	Lines
src/plugins/timelist/ExpandedViewItem.vue	5.26%	18 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8095      +/-   ##
==========================================
- Coverage   57.68%   57.34%   -0.34%     
==========================================
  Files         684      684              
  Lines       27558    27546      -12     
  Branches     2700     2695       -5     
==========================================
- Hits        15897    15797     -100     
- Misses      11326    11411      +85     
- Partials      335      338       +3     

Flag	Coverage Δ
e2e-ci	62.09% <ø> (-1.12%)	⬇️
e2e-full	42.89% <ø> (-0.08%)	⬇️
unit	49.09% <5.26%> (-0.05%)	⬇️

Files with missing lines	Coverage Δ
src/plugins/timelist/TimelistComponent.vue	64.79% <ø> (ø)
src/plugins/timelist/ExpandedViewItem.vue	5.76% <5.26%> (+1.08%)	⬆️

... and 20 files with indirect coverage changes

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