Minor fixes to resources and UI

app/src/main/res/values/colors.xml

@@ -26,7 +26,6 @@
     <color name="greyDivider">#808080</color>
     <color name="greySurface">#1e1e1e</color>
     <!-- map colors -->
-    <color name="satTrack">#D50000</color>
     <color name="satFootprint">#26FFE082</color>
     <color name="mapInfoLayout">#66000000</color>
 </resources>

app/src/main/res/values/strings.xml

@@ -44,7 +44,7 @@
     <string name="timer_zero" translatable="false">00:00:00</string>
     <string name="timer_placeholder" translatable="false">-</string>
 
-    <string name="passes_error">No satellites were selected</string>
+    <string name="passes_error">No upcoming passes</string>
 
     <string name="pass_satName" translatable="false">%s</string>
     <string name="pass_satId" translatable="false">Id:%d</string>