AC-833 Removed Collapsable bar in provider dashboard

[rishabh-997]

Description of what I changed

1. Removed collapsable toolbar
2. Added a new color which is similar to light black color in the dark mode

Issue I worked on

JIRA Issue: https://issues.openmrs.org/browse/AC-833

Checklist: I completed these to help reviewers :)

• My pull request only contains ONE single commit
  (the number above, next to the 'Commits' tab is 1).

• I have added tests to cover my changes. (If you refactored
  existing code that was well tested you do not have to add tests)

• All new and existing tests passed.

• My pull request is based on the latest changes of the master branch.

[rishabh-997]

[codecov-commenter]

Codecov Report

Merging #800 into master will increase coverage by 0.00%.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master     #800   +/-   ##
=======================================
  Coverage   13.43%   13.43%           
=======================================
  Files         238      238           
  Lines        9698     9695    -3     
  Branches      931      930    -1     
=======================================
  Hits         1303     1303           
+ Misses       8289     8286    -3     
  Partials      106      106           

Impacted Files	Coverage Δ
...ies/patientdashboard/PatientDashboardActivity.java	0.00% <0.00%> (ø)
...s/providerdashboard/ProviderDashboardActivity.java	0.00% <0.00%> (ø)

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[f4ww4z]

Looks good @rishabh-997