Propose UI improvements for the livedata header

Based on this screenshot we can point some issues with LD:

• Too much padding on the header text, inconsistent with other tables on XS
• Misalignment between fields (header, filter input and row data)
• Very little space between the border lines on the filter row
• Very thick line between columns for resizing

On mobile:

• Pagination is breaking and with odd alignments
• Vertical misalignment between fields labels and inputs
• The filter row is very similar to content rows, leading to potential confusion when reading the table