ability to resubmit kudos txns

[owocki]

Description

adds ability to resubmit kudos airdrop txns after a recent spat of user complaints.

the reason this happens is that as the network gas prices have increased... we do not have the proper mechanisms for queuing up transactions. if someone claims a kudos, and it doesnt clear by the time the next kudos claim comes in, there is a chance they will over write each other.

Refers/Fixes

https://twitter.com/AnettRolikova/status/1144655093758943234

Testing

tested locally via command line and view the web UI

[codecov]

Codecov Report

Merging #4725 into master will decrease coverage by <.01%.
The diff coverage is 2.56%.

@@            Coverage Diff             @@
##           master    #4725      +/-   ##
==========================================
- Coverage   30.64%   30.64%   -0.01%     
==========================================
  Files         216      216              
  Lines       17407    17411       +4     
  Branches     2363     2364       +1     
==========================================
+ Hits         5335     5336       +1     
- Misses      11857    11860       +3     
  Partials      215      215

Impacted Files	Coverage Δ
app/kudos/views.py	21.59% <2.56%> (+0.04%)	⬆️

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[danlipert]

@octavioamu @thelostone-mc

[thelostone-mc]

Thanks @owocki ^_^