Toggle state of bottom card on click

[ShridharGoel]

Description (required)

Fixes #2390

What changes did you make and why?

Added same functionality as the arrow-shaped button to the Step 1 bottom card as a whole.

Tests performed (required)

Tested betaDebug on Android 7.1.2 (API 25)

GIF showing what changed (optional - for UI changes)

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@1692705). Click here to learn what that means.
The diff coverage is 0%.

@@           Coverage Diff            @@
##             master   #2391   +/-   ##
========================================
  Coverage          ?   5.93%           
========================================
  Files             ?     238           
  Lines             ?   11364           
  Branches          ?    1028           
========================================
  Hits              ?     674           
  Misses            ?   10637           
  Partials          ?      53

Impacted Files	Coverage Δ
...ava/fr/free/nrw/commons/upload/UploadActivity.java	0% <0%> (ø)

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