LOGS BROWSER: Added interactivity between map, graph chart and data grid

LOGS BROWSER: Added interactivity between map, graph chart and data grid
Each of these actions:
- double click on the graph panel
- double click on a row in the data grid
- click on the GPS track on the map

will select a point in the data log and show it at the same time on the graph, the map and the grid:
- the point will be centered in the graph and a vertical dashed line will show its position
- a marker will be created and centered on the map 
- the grid will be scrolled to show the corresponding row