(Bug) Decimals value is lost if user returns back from step3 to step2

[dennis00010011b]

Related #632

Step to reproduce:

1. Open wizard, go to step 2
2. Fill out fields name, ticker, decimals
3. Click button "Continue"
4. Return back to step 2(click browser's button "Back" or keys "Alt+Left Arrow")
5. Observe fields decimals
   Expected result :fields decimals should contain values which was entered (like field Name and Ticker)
   Actual result: fields decimals is empty.

If you are reporting a problem with Token Wizard, please include the following information:

Which network did you use? (Mainnet, Kovan, Rinkeby, etc.)

n/a

If you were able to create it, what is the URL of your crowdsale?

n/a

Do you have screenshots showing the problem?

https://drive.google.com/open?id=1YJ7AQGoRnsG0jqwe4lYBCqcTNxoSYN7E

Do you see errors in the dev console? If yes, please include a screenshot

To open the dev console in Google Chrome, press F12, or go to View -> Developer -> Developer Tools, and open the Console tab

If you see errors, please right click on them and "Save as..". Zip saved file and attach it to the Issue.

No

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[fvictorio]

I think a lot of things will break if you go back to a previous step.

@vbaranov Is this a feature that we should support? If not, maybe a simpler solution would be to just not allow going back (maybe by instructing react-router to not push the step pages to the history, if that's possible).

[vbaranov]

Is this a feature that we should support?

as we have no back button in Wizard UI we shouldn't support this feature, imo. But it would be user-friendly to switch between steps before deployment. I added this feature request: #637.

If not, maybe a simpler solution would be to just not allow going back (maybe by instructing react-router to not push the step pages to the history, if that's possible).

I am ok with this quick solution if it will work.

[fvictorio]

Closing this in favor of #637.