Minor fixes in "Install localised content"

[smz]

Description

This fixes a couple of minor issues in the localised content installation

Steps to reproduce the issue

• Perform Joomla! installation
• Select "Extra steps: Install languages"
• In "Install Language Packages" select one or more additional language
• Set "Activate the multilingual feature:" to "Yes"
• Select "Install localised content"
• When installation has completed login in the backend and examine the automatically installed articles

Expected result

• Articles titles should be "Article" (or the corresponding translation) + Language code
• Articles should have empty metadata

Actual result

• In some language (e.g. Italian) the translation of the word "Article" might be incorrect.
• In the "Meta Description:" you'll find a JSON encoded string: {"robots":"","author":"","rights":"","xreference":""}

Testing instructions

Apply this patch and perform a new installation, as above: actual result should match expected result

Additional comments

Fixes #7280

[smz]

@infograf768
Thanks for suggesting the usage of the COM_CONTENT_CONTENT_TYPE_ARTICLE string! 👍

[brianteeman]

I think you are wrong about changing to empty metadata.
When you create a brand new article on a clean install and then check the database you will see that the metadata field contains {"robots":"","author":"","rights":"","xreference":""}

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[smz]

@brianteeman: Exactly, and that's the issue! 😄

[Bakual]

@brianteeman This is about metadesc, not metadata 😄

[brianteeman]

Oops

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[smz]

😜

[infograf768]

OK for me. Simple patch.

[anibalsanchez]

#Test OK

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[smz]

@anibalsanchez Thanks Anibal! May I ask you the favour to give a try at #7247 too?

[smz]

Sorry, I meant to say #7248 😄

[zero-24]

RTC Thanks 😄

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[smz]

Maybe this too (which is trivial) can go in 3.4.3. But that's not much important...

[Kubik-Rubik]

Thank you @smz! Merged.