Tester Response: Replace checkbox with radio buttons

[ptvrajsk]

Fixes #415

Old

New

CATcher.3.3.5.-.CATcher-org_bugreporting.-.Brave.2021-03-03.00-44-09.mp4

Proposed Commit Message:

Tester Response: Replace checkbox with radio buttons

In the tester response phase, if the tester agrees with the
team's response, she needs to save the response without modifying
anything else, in order for the agreement to be recorded.

Let's provide a more intuitive method of "agreeing with the
team's response" by using radio buttons that allow the user
to explicitly choose between 'I Disagree' and 'I Agree'.

These radio buttons replace the checkbox control in the
tester response form.

[kkangs0226]

The new change looks great, LGTM!:) Thanks for working on it! Radio buttons are definitely more suited for this purpose.

[codecov-io]

Codecov Report

Merging #618 (dc880a8) into master (ccd7754) will decrease coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #618      +/-   ##
==========================================
- Coverage   67.72%   67.68%   -0.05%     
==========================================
  Files          75       75              
  Lines        2259     2259              
  Branches      207      207              
==========================================
- Hits         1530     1529       -1     
  Misses        686      686              
- Partials       43       44       +1     

Impacted Files	Coverage Δ
src/app/shared/issue-tables/issue-sorter.ts	48.00% <0.00%> (-4.00%)	⬇️

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[anubh-v]

Looks good. Will be good to rename usages of checkbox to radio (esp in a few of the existing comments).