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/EliteDangerousGalnetBridge.php

@@ -7,6 +7,11 @@ class EliteDangerousGalnetBridge extends BridgeAbstract {
 	const CACHE_TIMEOUT = 7200; // 2h
 	const DESCRIPTION = 'Returns the latest page of news from Galnet';
 
+	public function getIcon() {
+		return 'https://community.elitedangerous.com/sites/
+EDSITE_COMM/themes/bootstrap/bootstrap_community/favicon.ico';
+	}
+
 	public function collectData(){
 		$html = getSimpleHTMLDOM(self::URI)
 			or returnServerError('Error while downloading the website content');