Bugfix/rte images softreferenceindexer

[saitho]

This PR is based on #133 (as I can't modify the draft) and should fix #157.

But I'm not sure how to properly test this right now.
Also the $this->parserKey check may be obsolete as the service is only registered for this key.

[CybotTM]

Thank you @saitho and @susannemoog

[fishbone1]

I get an error when saving pages depending on the rich text content. For example a paragraph with text and a table below is a problem. Only a table (without paragraph) works.

This error is caused by RteImagesSoftReferenceIndex / TypolinkSoftReferenceParser. So I hope this PR fixes it.

When will there be a new release? Is there a way to require the master from composer?

[saitho]

@fishbone1

When will there be a new release? Is there a way to require the master from composer?

I also hope for a new release. ;)

Actually you can require master in composer: You need to add this Git repository as repository in your composer.json first.
Then you can set dev-master as dependency which is the master branch.

"repositories": [
	{ "type": "git", "url": "https://github.com/netresearch/t3x-rte_ckeditor_image.git" }
],
"require": [
	"netresearch/rte-ckeditor-image": "dev-master as 11.0.3"
]