Fix gps lk unlk plotting - coloring, positioning label

closes #109 (closed)

• Adjust relative position between GPS Lk/Unlk and GPS Clock Power, separate data of GPS to 2 groups for sample numbers display
• From different plots, give different colors that match with plot and different position for displaying sample numbers.

sohstationviewer/database/extract_data.py

@@ -26,7 +26,7 @@ def get_chan_plot_info(org_chan_id: str, chan_info: Dict, data_type: str,
         chan = 'MassPos?'
     if org_chan_id.startswith('Event DS'):
         chan = 'Event DS?'
-    if org_chan_id.startswith('DS'):
+    if org_chan_id.startswith('DS') and 'DSP' not in org_chan_id:
         chan = 'DS?'
     if org_chan_id.startswith('Disk Usage'):
         chan = 'Disk Usage?'