Add more to desktop GUI

[NyaliaLui]

• while PAL is still connecting to MongoDB, show a loading icon. perhaps a gif?
• When PAL is running, show the running screen that shows the collected metric values for the current session. so ...
  • have a home screen that shows your record from current season: general W/L, W/L per race, W/L per map.
  • after every update to the replay folder show the opponent name, W/L record versus that opponent in the season, W/L record versus that opponent per map. After the update is finished, go back to the home screen.