mod_storage_sql: Fix column name in index check for PostgreSQL Forgot to change the column name in 9a7523ea45cb

mod_storage_sql: Adjust indentation to align with surrounding code

mod_storage_sql: Only remove old index if it exists Avoids an error if the upgrade is performed twice..

mod_storage_sql: Be more specific when checking for old index in SQLite3 Prevents false positives in the odd case where something other than an index with this name might exist.

mod_storage_sql: Improve check for old table index on PostgreSQL The "pg_indexes" view is much simpler to inspect than "pg_class"

mod_storage_sql: Enable UPSERT with PostgreSQL Tested. Works.

doap: Fix typo in attribute name

util.pposix: Use Lua enum API for resource limit name argument Because diffstat.

mod_storage_sql: Add some TODO comments for future UPSERT work

mod_storage_sql: Do not keep track of quota when no quota is set No point in doing this expensive O(n) query if the result is not used for anything. Will still cache the total item count if an explicit query for this is performed, then try to keep it updated with new items added. Will likely forget eventually tho.