Introducing a brief exp of Image License

[tanvidadu]

Introducing a brief explanation of Image License

Fixes #1316

Description (required)

Added a (?) link at the right of spinner, that opens https://commons.wikimedia.org/wiki/Commons:First_steps/License_selection in the user's language

Tests performed (required)

Tested on ProdDebug with languages English and Hindi.

Screenshots showing what changed (optional)

Note: Please ensure that you have read CONTRIBUTING.md if this is your first pull request.

[tanvidadu]

The PR is ready for riview @misaochan @maskaravivek !

I am facing this error in Travis :

No output has been received in the last 10m0s, this potentially indicates a stalled build or something wrong with the build itself.

[maskaravivek]

@tanvidadu I have restarted the build. Let's hope that it doesn't get stalled this time.

[codecov-io]

Codecov Report

Merging #1596 into master will decrease coverage by 0.03%.
The diff coverage is 0%.

@@            Coverage Diff            @@
##           master   #1596      +/-   ##
=========================================
- Coverage    3.87%   3.84%   -0.04%     
=========================================
  Files         150     151       +1     
  Lines        7560    7623      +63     
  Branches      708     708              
=========================================
  Hits          293     293              
- Misses       7250    7313      +63     
  Partials       17      17

Impacted Files	Coverage Δ
.../free/nrw/commons/upload/SingleUploadFragment.java	0% <0%> (ø)	⬆️
...in/java/fr/free/nrw/commons/upload/UrlLicense.java	0% <0%> (ø)

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[misaochan]

The screenshot looks good to me. :) Should we make a new branch for the tutorial task, though, instead of merging to master? Admittedly this PR could be standalone, but if we merge to master we will need to test it first.

[tanvidadu]

I submitted this pr as a standalone as it is not directly related to quiz and tutorial, But we can surely direct it to new branch :)

[neslihanturan]

Great job @tanvidadu , works for me. Sorry for long review time, we were busy with IEG tasks. Thanks for your contribution and patience:)

[maskaravivek]

This is a nice little feature addition. :)