Replace submodules with actual files

Submodules never were actually useful

eos/db/migration.py

@@ -0,0 +1,20 @@
+import sqlalchemy
+
+def update(saveddata_engine):
+    checkPriceFailures(saveddata_engine)
+
+def checkPriceFailures(saveddata_engine):
+    # Check if we have 'failed' column
+    try:
+        saveddata_engine.execute("SELECT failed FROM prices")
+    except sqlalchemy.exc.DatabaseError:
+        # As we don't have any important data there, let's just drop
+        # and recreate whole table
+        from eos.db.saveddata.price import prices_table
+        # Attempt to drop/create table only if it's already there
+        try:
+            prices_table.drop(saveddata_engine)
+            prices_table.create(saveddata_engine)
+        except sqlalchemy.exc.DatabaseError:
+            pass
+