Modernize src/c* src/d* and src/e* files (#6263)

* Modernize src/c* src/d* and src/e* files

* default operator
* redundant init
* delete default constructors on CraftDefinition childs (never used)
* fix some missing init values
* const ref fix reported by clang-tidy
* ranged-based for loops
* simple conditions & returns
* empty stl function instead of size
* emplace_back stl function instead of push_back + construct temp obj
* auto for some iterators
* code style fixes
* c++ stl headers instead of C stl headers (stdio.h -> cstdio)

src/database-redis.cpp

@@ -38,7 +38,7 @@ Database_Redis::Database_Redis(Settings &conf)
 	try {
 		tmp = conf.get("redis_address");
 		hash = conf.get("redis_hash");
-	} catch (SettingNotFoundException) {
+	} catch (SettingNotFoundException &) {
 		throw SettingNotFoundException("Set redis_address and "
 			"redis_hash in world.mt to use the redis backend");
 	}