bridges: Add favicon to bridges missing it

Adds favicon to bridges that support it. Some sites prevent downloading
favicons, those bridges are left untouched.

Affected bridges:

- AutoJMBridge
- BandcampBridge
- BlaguesDeMerdeBridge
- BloombergBridge
- BundesbankBridge
- ChristianDailyReporterBridge
- ContainerLinuxReleasesBridge
- DailymotionBridge
- DiceBridge
- DribbbleBridge
- EliteDangerousGalnetBridge
- ElsevierBridge
- FacebookBridge
- FB2Bridge
- FDroidBridge
- FierPandaBridge
- GooglePlusPostBridge
- JapanExpoBridge
- KATBridge
- KernelBugTrackerBridge
- LegifranceJOBridge
- NotAlwaysBridge
- NyaaTorrentsBridge
- PinterestBridge
- RadioMelodieBridge
- RainbowSixSiegeBridge
- SupInfoBridge
- TagBoardBridge
- TebeoBridge
- TheTVDBBridge
- WhydBridge
- ZoneTelechargementBridge

bridges/ElsevierBridge.php

@@ -57,6 +57,10 @@ class ElsevierBridge extends BridgeAbstract {
 		return '';
 	}
 
+	public function getIcon() {
+		return 'https://cdn.elsevier.io/verona/includes/favicons/favicon-32x32.png';
+	}
+
 	public function collectData(){
 		$uri = self::URI . $this->getInput('j') . '/recent-articles/';
 		$html = getSimpleHTMLDOM($uri)