when running make rhinojs fails due to a missing cp command

cp rhino/buildGradle/libs/rhino*.jar rhino.jar
usage: cp [-R [-H | -L | -P]] [-fi | -n] [-apvXc] source_file target_file
       cp [-R [-H | -L | -P]] [-fi | -n] [-apvXc] source_file ... target_directory
make: *** [rhino.jar] Error 64

Issue was resolved by manually copying one of the jars

`cp rhino/buildGradle/libs/r

Is your feature request related to a problem or area of OpenRefine? Please describe.

When previewing an importer's results, there is a text field to enter the project name. When pressing Enter in this field, I would expect the project to be created (without having to click the "Create Project" button).

![image](https://user-images.githubusercontent.com/309908/91545213-1a244a80-e921-11ea-

https://www.audiomack.com/data-api/docs

See starter code in #681

Short description
Recently, the bug #2423 related to the auto-detection of filename and extension was fixed.

So, we can remove some unnecessary code from the datasets given below.

Steps:

• Remove tfds.download.resource from the datasets given below.
• Download and prepare the datasets.
• Add the link to generated dataset_info.json

For reference, see https://github.com/tensorfl

We used to tweak it heavily on Hadoop but not so much on GCS. A few things:

• Writer numShards - this affects output file size, should be >= 1GB and >= block size.
• Writer block size - was 1GB on HDFS but probably can use more on GCS due to IO overhead?
• Reader mapred.min.split.size to avoid input split too large i.e. #3315