Fixes

Better error handling in client
Cleanup client generally

Features

(S) Highlight the selected column's cell more visibly (for linking out to resource links?)
(M) Custom theming
(M) Link out to useful pages on Enter press (e.g. open browser at s3 location)
(M) Lake Fomration: Show LF-Tags for table columns (probably on Schema tab)
(L) Cache results between sessions?