improve matching of entries to objectives

If the faction does not match, we don't care about the other match criteria.

BGS/Objective.cs

@@ -32,6 +32,19 @@ namespace EliteBGS.BGS {
                 }
             }
 
+            if (e.Faction != null && faction != null) {
+                if (string.Compare(e.Faction, faction, true) != 0) {
+                    /* if we have a faction, and it doesn't match we don't care.
+                     * faction is the most important comparision, so if it doesn't match
+                     * it is not the right objective
+                     */
+                    return 0;
+                } else {
+                    ++match_count;
+                }
+            }
+
+            /* system and station only add to the match strength though */
             if (e.System != null && system != null) {
                 if (string.Compare(e.System, system, true) == 0) {
                     ++match_count;
@@ -44,12 +57,6 @@ namespace EliteBGS.BGS {
                 }
             }
 
-            if (e.Faction != null && faction != null) {
-                if (string.Compare(e.Faction, faction, true) == 0) {
-                    ++match_count;
-                }
-            }
-
             return match_count;
         }