New v8 testing: [ABOUT DATA] in new version vs [About this Data] in current version

[martin-bom]

1. Styling issue:

   Current version:
   

   New version:
   

   Can it be configured? or is it aligned in all TerriaJS application? Thank you.

2. Export:
   NEII Data Services - Conformant --> Water --> Water Regulations Data (BoM) --> Water Temperature

   Current version:
   

   New version:
   

   The button did not specify the output format in CSV, and after I clicked the button, the output format is txt.

3. Remove button replaced by "..."
   Current version:
   

   User would like to know if the new version can keep the remove button or not.

Thank you.