Avoid Mediawiki / SMW issues with need for escaping

[WolfgangFahl]

All relevant names for e.g. entities/properties should not contain special characters that need escaping. The most important special character is the space. So instead of "Event series" "EventSeries" in Camelcase notation would be much better for the internal representation. The users do not necessary have to see this e.g. the label and the menu entries could still be "Event series". But for all internal actions e.g. ask queries we might want to use the Camelcase notation.

See

• Escaping of the query leads to different queries WolfgangFahl/py-3rdparty-mediawiki#55 and
• https://www.openresearch.org/wiki/Issue:Query_Underscore and

for the motivation of this issue

[tholzheim]

If identifiers follow a format like [_a-zA-Z][_a-zA-Z0-9]* life would be easier

[tholzheim]

I opened a question for this issue SemanticMediaWiki/SemanticMediaWiki#4933

[WolfgangFahl]

wikiquery -s orcopy -q "[[isA::EventSeries]]" | wc -l 
1027

[WolfgangFahl]

https://or.bitplan.com/index.php?title=Template:Event_series&action=edit