Add a config setting for player head img url

- Added config setting Display_options.Player_head_img_url

Affects issues:
- Close #2243

Plan/common/src/main/java/com/djrapitops/plan/delivery/rendering/pages/PlayerPage.java

@@ -25,6 +25,7 @@ import com.djrapitops.plan.delivery.rendering.html.Contributors;
 import com.djrapitops.plan.delivery.rendering.html.Html;
 import com.djrapitops.plan.identification.ServerInfo;
 import com.djrapitops.plan.settings.config.PlanConfig;
+import com.djrapitops.plan.settings.config.paths.DisplaySettings;
 import com.djrapitops.plan.settings.locale.Locale;
 import com.djrapitops.plan.settings.theme.Theme;
 import com.djrapitops.plan.settings.theme.ThemeVal;
@@ -101,6 +102,7 @@ public class PlayerPage implements Page {
         String playerName = player.getValue(PlayerKeys.NAME).orElse(playerUUID.toString());
         placeholders.put("playerName", playerName);
         placeholders.put("playerUUID", playerUUID);
+        placeholders.put("playerHeadUrl", config.get(DisplaySettings.PLAYER_HEAD_IMG_URL));
 
         placeholders.put("timeZone", config.getTimeZoneOffsetHours());
         placeholders.put("gmPieColors", theme.getValue(ThemeVal.GRAPH_GM_PIE));

Plan/common/src/main/java/com/djrapitops/plan/settings/config/paths/DisplaySettings.java

@@ -17,11 +17,7 @@
 package com.djrapitops.plan.settings.config.paths;
 
 import com.djrapitops.plan.settings.config.ConfigNode;
-import com.djrapitops.plan.settings.config.paths.key.BooleanSetting;
+import com.djrapitops.plan.settings.config.paths.key.*;
-import com.djrapitops.plan.settings.config.paths.key.DoubleSetting;
-import com.djrapitops.plan.settings.config.paths.key.IntegerSetting;
-import com.djrapitops.plan.settings.config.paths.key.Setting;
-import com.djrapitops.plan.settings.config.paths.key.StringSetting;
 
 /**
  * {@link Setting} values that are in "Display_options" section.
@@ -31,6 +27,7 @@ import com.djrapitops.plan.settings.config.paths.key.StringSetting;
 public class DisplaySettings {
 
     public static final Setting<String> THEME = new StringSetting("Display_options.Theme");
+    public static final Setting<String> PLAYER_HEAD_IMG_URL = new StringSetting("Display_options.Player_head_image_url");
     public static final Setting<Integer> SESSIONS_PER_PAGE = new IntegerSetting("Display_options.Sessions.Show_on_page");
     public static final Setting<Boolean> ORDER_WORLD_PIE_BY_PERCENTAGE = new BooleanSetting("Display_options.Sessions.Order_world_pies_by_percentage");
     public static final Setting<Integer> PLAYERS_PER_SERVER_PAGE = new IntegerSetting("Display_options.Players_table.Show_on_server_page");

Plan/common/src/main/java/com/djrapitops/plan/storage/database/DBSystem.java

@@ -94,6 +94,7 @@ public class DBSystem implements SubSystem {
         } catch (DBInitException e) {
             Throwable cause = e.getCause();
             String message = cause == null ? e.getMessage() : cause.getMessage();
+            if (message == null) e.printStackTrace();
             throw new EnableException(db.getType().getName() + " init failure: " + message, cause);
         }
     }

Plan/common/src/main/resources/assets/plan/bungeeconfig.yml

@@ -127,6 +127,7 @@ Display_options:
   # More information about Themes:
   # https://github.com/plan-player-analytics/Plan/wiki/Themes
   Theme: default
+  Player_head_image_url: "https://cravatar.eu/helmavatar/${playerName}/120.png"
   Sessions:
     Show_on_page: 50
     # By Default World playtime pie is ordered alphabetically.

Plan/common/src/main/resources/assets/plan/config.yml

@@ -132,6 +132,7 @@ Display_options:
   # More information about Themes:
   # https://github.com/plan-player-analytics/Plan/wiki/Themes
   Theme: default
+  Player_head_image_url: "https://cravatar.eu/helmavatar/${playerName}/120.png"
   Sessions:
     Show_on_page: 50
     # By Default World playtime pie is ordered alphabetically.

Plan/common/src/main/resources/assets/plan/web/player.html

@@ -144,8 +144,8 @@
                                                     id="data_kick_count"></span></p>
                                         </div>
                                         <div class="col-xs-4 col-sm-4 col-md-4 col-lg-4">
-                                            <img class="rounded mx-auto d-block"
+                                            <img class="rounded mx-auto d-block" src="${playerHeadUrl}"
-                                                 src="https://cravatar.eu/helmavatar/${playerName}/120.png">
+                                                 style="width: 120px;">
                                         </div>
                                         <div class="col-xs-4 col-sm-4 col-md-4 col-lg-4">
                                             <p><i class="col-red fa fa-fw fa-crosshairs"></i> Player Kills<span