Provide "sesp-property-***-desc" system messages

[kghbln]

Setup and configuration

• MediaWiki | 1.31.6 (c168a3f)14:28, 19 December 2019
• PHP | 7.2.24-0ubuntu0.18.04.1 (apache2handler)
• MariaDB | 10.1.43-MariaDB-0ubuntu0.18.04.1
• Semantic MediaWiki | 3.1.2 (e00b175) 09:42, 12 January 2020
• Semantic Extra Special Properties | 2.0.0 (5a75bb2) 09:33, 12 October 2018

Issue

Refs: #msg36899673

Currently not all extra special properties provided by this extension indicate their origin, e.g. Page ID does whereas Subpage does not.

For the latter and extra special properties showing the same behaviour the "sesp-property-***-desc" system messages are missing and should be provided.

[kghbln]

@mwjames I assume that it is just a matter of missing description messages. If so I could take on this task.

[kghbln]

I guess SemanticMediaWiki/SemanticMediaWiki#4493 got triggered by this issue.

In the end however it is indeed just a matter of adding the missing system messages?

[mwjames]

In the end however it is indeed just a matter of adding the missing system messages?

Yes.

I guess SemanticMediaWiki/SemanticMediaWiki#4493 got triggered by this issue.

I just came across the missing File attachment description in SMW core due to some refactoring for the FileIndexer and I ended-up creating a test which found the missing ones.