crop 8.x-1.1

Changes since 8.x-1.0 :

#2855792 by rocket.man, woprrr: Replace all of deprecated usages
#2843885 by nehakhadke, woprrr: $this->t() should be used instead of t() for Drupal 8 version
#2836342 by woprrr, harsha012: Fix the coding standard
#2724085 by woprrr, Berdir: \Drupal\crop\Entity\Crop::save() should be \Drupal\crop\Entity\Crop::postSave()
#2778239 by woprrr, kerby70, Leo Pitt, slashrsm, xenophyle, rwam: Incorrect dimensions in img tag attributes
#2658268 by mbovan, woprrr, Berdir, miro_dietiker, slashrsm, vurt: Cache persistence after derivative creation
#2833429 by kekkis, zerolab: Fix the typo that was introduced in #2814121
#2814121 by bleen, woprrr, slashrsm: Add configuration to prevent image flush on crop change.
#2825297 by cbiggins: Fix poor grammar on crop config screen.
#2808671 by SteffenR, zerolab: Move crop admin UI to admin/config/media.
#2801485 by slashrsm, Berdir: Move \Drupal\Tests\crop\Kernel\CropFunctionalTest to the correct namespace for a simpletest web test
#2755045 by neerajsingh, miro_dietiker: Remove @file tag docblock