(Improvement) Revist UI texts

[garatortiz]

Before submitting a pull request, please provide the following information:

• What is it? (leave one option)
  • (Improvement) of existing functionality

Please also put it into pull request title, e.g. (Fix) confirmation page loading

• What was the root cause of the problem originally / what feature was missing?

• How does this pull request solve it (in broad terms)? The texts proposed here are only to give an idea of the information that could be provided, and some small changes in their location. Surely all texts need to be reviewed by a copywriter and some sections, 'how it works' for example, require work by the designer.

• Does it close any open issues? Closes #140

• Quick checklist

  • [x] npm run lint shows no errors
  • [x] docs were updated where necessary OR they don't need to be updated
  • [x] tests were updated where necessary OR they don't need to be updated

• Additional information

[coveralls]

Pull Request Test Coverage Report for Build 472

• 6 of 11 (54.55%) changed or added relevant lines in 6 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.7%) to 80.1%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
web-dapp/src/components/MyAddressesPage.js	1	2	50.0%
web-dapp/src/components/HelpPage.js	0	1	0.0%
web-dapp/src/components/App.js	2	5	40.0%
<!--	Total:	6	11	54.55%	-->

Totals
Change from base Build 470:	0.7%
Covered Lines:	974
Relevant Lines:	1189

---

💛 - Coveralls

[phahulin]

• there is still Lorem ipsum on "How it works?" page
• on /register page let's change "Address" caption to "Street address"

[fvictorio]

Something related to the previous PR but that I hadn't noticed: the "Back" button reloads the page instead of just changing the route. The fix is easy: change <a href="/"> to <Link to="/">, but that breaks the tests and fixing them is not straightforward.

If you agree with this, I will create an issue with more information.