Optimize imports

[egsavage]

Title (required)

Fixes #1926 (partially) - Code quality changes

Description (required)

Fixes #1926 (partially) - Code quality changes

Optimize imports across the project.

Tests performed (required)

Basic compilation at this point.

[codecov-io]

Codecov Report

Merging #1927 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #1927   +/-   ##
======================================
  Coverage    3.71%   3.71%           
======================================
  Files         192     192           
  Lines        9915    9915           
  Branches      886     886           
======================================
  Hits          368     368           
  Misses       9520    9520           
  Partials       27      27

Impacted Files	Coverage Δ
...n/java/fr/free/nrw/commons/CommonsApplication.java	31.25% <ø> (ø)	⬆️
...in/java/fr/free/nrw/commons/upload/UrlLicense.java	0% <ø> (ø)	⬆️
...java/fr/free/nrw/commons/upload/ShareActivity.java	0% <ø> (ø)	⬆️
...fr/free/nrw/commons/media/MediaDetailFragment.java	0% <ø> (ø)	⬆️
...va/fr/free/nrw/commons/explore/SearchActivity.java	0% <ø> (ø)	⬆️
...w/commons/category/CategoryImagesListFragment.java	0% <ø> (ø)	⬆️
...n/java/fr/free/nrw/commons/MediaDataExtractor.java	0% <ø> (ø)	⬆️
...free/nrw/commons/theme/NavigationBaseActivity.java	25.6% <ø> (ø)	⬆️
.../fr/free/nrw/commons/di/FragmentBuilderModule.java	0% <ø> (ø)	⬆️
...nrw/commons/achievements/AchievementsActivity.java	0% <ø> (ø)	⬆️
... and 35 more

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