Added some travis ci target + corrected some warnings

src/libs/database/CMakeLists.txt

@@ -24,13 +24,13 @@ target_include_directories(lmsdatabase PRIVATE
 	)
 
 target_link_libraries(lmsdatabase PRIVATE
-	wtdbosqlite3
+	Wt::DboSqlite3
 	)
 
 target_link_libraries(lmsdatabase PUBLIC
 	lmsutils
 	std::filesystem
-	wtdbo
+	Wt::Dbo
 	)
 
 install(TARGETS lmsdatabase DESTINATION lib)

src/libs/database/impl/SqlQuery.cpp

@@ -145,7 +145,7 @@ FromClause::FromClause(const std::string& clause)
 FromClause&
 FromClause::And(const FromClause& clause)
 {
-	for (const std::string fromClause : clause._clause)
+	for (const std::string& fromClause : clause._clause)
 	{
 		_clause.push_back(fromClause);
 	}