Gold linker, CCache, Stats, LGTM

- Increases linker performance under Linux builds by using Gold linker, if available
- ccache is used if available
- removed statistic class (Stats.cpp) from project due to the missing result (sorry @Brindosch)
- add LGTM bandges for code analysis overview

Signed-off-by: Paulchen-Panther <Paulchen-Panter@protonmail.com>

assets/webconfig/content/update.html

@@ -15,7 +15,8 @@
 </div>
 
 <script>
-performTranslation('trans_update');
+// performTranslation('trans_update');
+performTranslation();
 
 	for (key in parsedUpdateJSON)
 	{