Minor improvements

Summary:
Some styling fixes and minor improvements in DataTable, used by network plugin:

- be able to customise the context menu
- be able to customise how entire rows are copied and presented on the clipboard to be able to deviate from the standard JSON
- deeplink handling was made async, this gives the plugin the opportunity to first handle initial setup and rendering before trying to jump somewhere which is a typical use case for deeplinking

Reviewed By: passy

Differential Revision: D27947186

fbshipit-source-id: a56f081d60520c4bc2ad3c547a8ca5b9357e71a1

desktop/flipper-plugin/src/ui/data-table/TableRow.tsx

@@ -48,6 +48,7 @@ const TableBodyRowContainer = styled.div<TableBodyRowContainerProps>(
     borderLeft: props.highlighted
       ? `4px solid ${theme.primaryColor}`
       : `4px solid transparent`,
+    borderBottom: `1px solid ${theme.dividerColor}`,
     paddingTop: 1,
     minHeight: DEFAULT_ROW_HEIGHT,
     lineHeight: `${DEFAULT_ROW_HEIGHT - 2}px`,
@@ -74,7 +75,6 @@ const TableBodyColumnContainer = styled.div<{
   flexGrow: props.width === undefined ? 1 : 0,
   overflow: 'hidden',
   padding: `0 ${theme.space.small}px`,
-  borderBottom: `1px solid ${theme.dividerColor}`,
   verticalAlign: 'top',
   // pre-wrap preserves explicit newlines and whitespace, and wraps as well when needed
   whiteSpace: props.multiline ? 'pre-wrap' : 'nowrap',