ported search.php & tools to lib2, and ...

- fixed logentry sorting for logs with identical date
- fixed ä etc. display in short descriptions on search results page
- try to select a matching language for the short descriptions
- added some translations
- hide download and map links if no search results (updates #235)
- nicer display of selectlocid page
- use site-dependent urls in GPX, LOC, TXT and KML
- unified XML encoding, now all done via two functions in lib2/util.inc.php (updates #121)
- some preventive XML encoding adjustments in GPX
- removed XML encoding in LOC CDATA section
- improved charset conversion for OVL and OV2 output
- some optimizations
- discarded lots of obsolete code
- disabled debug mode force_compile in OcSmarty class (performance)

bin/dbsv-update.php

@@ -325,6 +325,12 @@
 		update_triggers();
 	}
 
+	function dbv_116()	// optimize index for sorting logs
+	{
+		sql("ALTER TABLE `cache_logs` DROP INDEX `date`,
+		     ADD INDEX `date` (`cache_id`,`date`,`date_created`)");
+	}
+
 
 	// When adding new mutations, take care that they behave well if run multiple
 	// times. This improves robustness of database versioning.