Changed db optimization strategy: now perform a full analyze (only after scan if enough changes has been made, and during application startup). Also perform a vacuum if needed during startup. Added an init screen for the web interface since it can take a while to complete

src/libs/database/test/Common.cpp

@@ -60,8 +60,8 @@ namespace lms::db::tests
         _tmpDb = std::make_unique<TmpDatabase>();
         {
             db::Session s{ _tmpDb->getDb() };
-            s.prepareTables();
-            s.analyze();
+            s.prepareTablesIfNeeded();
+            s.createIndexesIfNeeded();
         }
     }