Feature: #68191 - TypoScript .select option languageField is active by default

Description

The TypoScript .select option which is used for Content Objects like "CONTENT", has the property "languageField". This option allows to set the name of the database field that has the information about the sys_language_uid value in order to have only records shown that are translated or set to "-1" (show in all languages) when showing translated pages.

Previously this functionality had to be set explicitly:

config.sys_language_uid = 2
page.10 = CONTENT
page.10 {
	table = tt_content
	select.where = colPos=0
	select.languageField = sys_language_uid
	renderObj = TEXT
	renderObj.field = header
	renderObj.htmlSpecialChars = 1
}

The languageField line is not necessary anymore, as the information is now fetched automatically from the TCA information structure:

config.sys_language_uid = 2
page.10 = CONTENT
page.10 {
	table = tt_content
	select.where = colPos=0
	renderObj = TEXT
	renderObj.field = header
	renderObj.htmlSpecialChars = 1
}

If the functionality should be disabled, this can be achieved like this:

config.sys_language_uid = 2
page.10 = CONTENT
page.10 {
	table = tt_content
	select.where = colPos=0
	select.languageField = 0
	renderObj = TEXT
	renderObj.field = header
	renderObj.htmlSpecialChars = 1
}

Impact

All records that have language-relevant information in the TCA "ctrl"-section displayed via .select in the frontend on translated pages are now translated by default.