Add support for "%Title Case" in column names

[mattiasthalen]

Hi,

We have the practice of creating UX views for our facts & dimensions, that shows them with "readable" column names.

The UI currently breaks when we have "%" in the name, which is used in Qlik to signify keys, and can be processed seperately.

The "Title Case" is converted to "title case" in the compiled query.

[izeigerman]

@mykalmax can you please have a look