Fix some more issues in DatabaseDS (Python implementation) (!752) · Merge requests · tango-controls / pytango

Adds some more fixes I found while using the database server locally, running Sardana test suite, etc.

Summary:

Case insensitivity
Added indexes, hopefully good for performance (should do some performance testing on this)
Supporting "escaped" characters
Fix error with device startup, due to broken DbGetDataForServerCache. Still not working but does not cause errors any more.
Attribute/class properties related fixes
Other minor stuff

There are more issues remaining, but I'm pushing this MR so it can be part of the upcoming RC release.

Fix some more issues in DatabaseDS (Python implementation)