Support 237 authenticate login

[cdcabrera]

Support auth login

• ReadMe updates for starting and testing Frontigrade
• adjust auth remember email
• minor adjustment to remove email without having to submit login
• prettier and linter adjustment
• build packages updated

Converted from vert nav to masthead pf component

• converted towards pf-react masthead component, supporting styles

Unit test updates for connected components

• toastNotification connected export and updated tests
• masthead connected component export and tests
• authentication connected export and updated tests

[codecov[bot]]

Codecov Report

Merging #18 into 237-authenticate-login will increase coverage by 7.48%. The diff coverage is 85.18%.

@@                    Coverage Diff                     @@
##           237-authenticate-login      #18      +/-   ##
==========================================================
+ Coverage                   79.89%   87.38%   +7.48%     
==========================================================
  Files                          19       19              
  Lines                         194      214      +20     
  Branches                       32       34       +2     
==========================================================
+ Hits                          155      187      +32     
+ Misses                         33       25       -8     
+ Partials                        6        2       -4

Impacted Files	Coverage Δ
...s/toastNotificationsList/toastNotificationsList.js	69.23% <100%> (+2.56%)	:arrow_up:
src/components/masthead/masthead.js	84.21% <84.21%> (ø)
src/components/authentication/authentication.js	64.81% <85.71%> (+32.81%)	:arrow_up:

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