Merge Structured Data branch into master

1. Clone this repository somewhere on your computer: https://github.com/VitalyVPinchuk/apps-android-commons/tree/upload_caption_depict
2. Switch to the upload_caption_depict branch
3. Test it: Browse by items, see parent and child items
4. Test it more: Upload a picture via Nearby and post below the URL of the uploaded picture
5. Merge the latest master of [e-mail]:commons-app/apps-android-commons.git
6. Fix the conflicts
7. Test again (steps 3 and 4)
8. Let us know when you are done by posting a comment below

[nicolas-raoul]

@macgills I have thousands of pictures to upload, here are some just for you, after you upload them all please please ask and I will add a hundred more 😃

[misaochan]

@macgills Wow, sorry, I didn’t get notified of this ping for some reason! Could you please link me to the image on Commons that you uploaded with this branch? The caption and depicts fields should be appropriately filled in the Commons file page.

subsequently a crash when clicking the 2nd item but that bug was introduced in #3133.

How did #3133 introduce a new crash?

Aside from that, here are the issues with the branch that I can see so far:

From @maskaravivek :

Apart from resolving the merge conflicts, this task would also require fixing the Wikidata API calls. None of the authenticated API were working earlier.

Also, the URLs are correct AFAIK, but some changes need to be done in how the edit token is fetched. Also, some of the APIs need to be modified to send multipart request params instead of application/x-www-form-urlencoded.

From @nicolas-raoul :

Test it: Browse (Explore) by items, see parent and child items Test it more: Upload a picture via Nearby and post below the URL of the uploaded picture Merge the latest master of [e-mail]:commons-app/apps-android-commons.git Fix the conflicts Test again (steps 3 and 4) Let us know when you are done by posting a comment below

From @GearGit :

Whenever I am searching for some caption under items -> media tab, “No images found” message is displayed for any caption that I enter, but if I enter same caption under the media tag then it works fine. Furthermore, when I am checking the parent and child classes, then I am sometimes encountering the following leak:

Also, for an easy-to-read summary of what the PR is supposed to do, you can read this: https://medium.com/@vanshikaa937/google-summer-of-code19-final-post-d78e601ea39d . I think it’s OK for this task to take you 1-2 weeks, if the final result is a polished implementation of depicts and captions in our upload process and Explore feature.