add ability to bulk edit challenges tags

[jschwarz2030]

This feature adds an "Edit Selected" option to the project challengeListWidget, which directs user to add common tags to each of the challenges tallied.

[codecov[bot]]

Codecov Report

Merging #1803 (d849874) into develop (9d62e85) will increase coverage by 0.84%. The diff coverage is 64.65%.

@@             Coverage Diff             @@
##           develop    #1803      +/-   ##
===========================================
+ Coverage    21.52%   22.37%   +0.84%     
===========================================
  Files          594      597       +3     
  Lines        19874    19990     +116     
  Branches      6025     6049      +24     
===========================================
+ Hits          4278     4472     +194     
+ Misses       13085    13033      -52     
+ Partials      2511     2485      -26     

Impacted Files	Coverage Δ
src/components/AdminPane/AdminPane.js	53.84% <ø> (+46.15%)	:arrow_up:
...Widgets/ChallengeListWidget/ChallengeListWidget.js	40.90% <ø> (+33.33%)	:arrow_up:
...e/ManageChallenges/EditChallenge/EditChallenges.js	52.87% <52.87%> (ø)
...ge/ManageChallenges/EditChallenge/BulkEditSteps.js	100.00% <100.00%> (ø)
...EditChallenge/BulkSchemas/DiscoverabilitySchema.js	100.00% <100.00%> (ø)
src/components/SearchBox/SearchBox.js	68.75% <0.00%> (+3.12%)	:arrow_up:
src/components/Dropdown/Dropdown.js	76.19% <0.00%> (+4.76%)	:arrow_up:
...ustom/RJSFFormFieldAdapter/RJSFFormFieldAdapter.js	27.02% <0.00%> (+17.11%)	:arrow_up:
src/components/MarkdownContent/MarkdownContent.js	95.45% <0.00%> (+22.72%)	:arrow_up:
...onents/HOCs/WithKeywordSearch/WithKeywordSearch.js	35.48% <0.00%> (+25.80%)	:arrow_up:
... and 7 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.