Dev to merge, add Favourite Candidate page and modify Favourite District Page

[dasaitamago]

• Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• [ Yes] Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• [ Yes] i18n translation has been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
  feature added
  add Favourite Candidate page

• What is the current behavior? (You can also link to an open issue here)

• What is the new behavior (if this is a feature change)?
  add Favourite Candidate page

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

• Other information:

[cswbrian]

@dasaitamago

./src/App.js
Module not found: Can't resolve 'components/pages/fav-candidate' in '/Users/brianyfleung/Documents/open-data/district-councils-dashboard/web/src'

[dasaitamago]

sorry, the files are added.