metadata rendering: general info about a data entity

[mobb]

for dataTable and otherEntity: there are some important parts of the physical description we should show. These xpaths:

• [x] /eml/dataset/dataTable/physical/dataFormat/textFormat/numHeaderLines
• [x] /eml/dataset/dataTable/physical/dataFormat/textFormat/simpleDelimited/fieldDelimiter
• [x] /eml/dataset/dataTable/physical/objectName
• [x] /eml/dataset/dataTable/physical/size
• [x] /eml/dataset/dataTable/numberOfRecords

when the table description opens up, use a small table. keep the description and download link in the left column, and all these in the right column (approx 25% width)