Merge remote-tracking branch 'lf/feature/fileupload'
FileUpload: Change rename to copy and delete

- Changed rename to copy and delete to allow for situations where tmp and assets are
  on different file systems.
- Fixed test file name.
fix up uppercase extension test
fix LIFT import so data is still imported when there is no existing data and "import loses" is  selected
fix local E2E run scripts

 - useTestConfig.sh and useLiveConfig.sh have been pulled out setupTestEnvironment.php and teardownTestEnvironment.php so that build tests work properly.
Merge branch 'feature/fileupload' of https://github.com/sillsdev/lfsite into feature/fileupload