Fix inconsistencies in incunabula-demo-data.ttl.

[benjamingeer]

Fixes #405.

• Ran incunabula-demo-data.ttl through TransformData -t all.
• Added missing valueHasCreationDate.
• Added text to fix empty strings.
• There were many references to sidebands, but no actual sidebands. Removed all references to sidebands.

[tobiasschweizer]

incunabula-demo-data now passes consistency checking.
However, it is not used (loaded) anywhere. So I wonder why we have it.

[subotic]

We created it at the time when we published Knora on Github, so that a potential user would have some demo data that would load in a shorter time, then the full incunabula data.

IMHO we can remove this. We have enough ttl files that we need to maintain. We still have ``images-demo.ttl` which could be used for a quick test.

I don't know if Lausanne is using this.

[tobiasschweizer]

it passes consistency checking now so it can be merged (even though we might remove it later :-))

[mrivoal]

No, we don't use it.

I loaded it the last time because I got lost in the .ttl files avaiblable. I wanted to run some tests but I could have done it with incunabula-data.ttl.

[benjamingeer]

It's part of the documentation:

http://www.knora.org/documentation/manual/rst/introduction/example-project.html

[tobiasschweizer]

Right! Ok, it can be merged then.

[loicjaouen]

i don't see a reference to incunabula-demo-data.ttl but incunabula-data.ttl.

[tobiasschweizer]

store-module.rst:

            {
                path = "_test_data/demo_data/incunabula-demo-data.ttl"
                name = "http://www.knora.org/data/incunabula"
            }

[benjamingeer]

If you're all happy for the huge incunabula-data.ttl to be used in the docs, I'm happy to delete incunabula-demo-data.ttl. One less thing to maintain.

[loicjaouen]

we are not particularly happy with the huge file, but we got side-tracked by the outdated small one.

It is now in sync, fine, let's keep it.
But there is no automated ways to check it, so maintaining it will be difficult and chances of lags are high.