[BUGFIX] Add hideAtCopy and prependAtCopy for pages_language_overlay

When a pages_language_overlay record is copied it will be hidden
and it's name will change to 'oldName (copy n)'.
And adding a default value for shortcut column. (mysql 5.7 and strict mode)

Resolves: #76038
Releases: master
Change-Id: I5c9bea7bb15fe647d18eeaaf6776cfa82e18d9a9
Reviewed-on: https://review.typo3.org/48071


Reviewed-by: Susanne Moog <typo3@susannemoog.de>
Tested-by: Susanne Moog <typo3@susannemoog.de>
Reviewed-by: Joerg Boesche <typo3@joergboesche.de>
Tested-by: Joerg Boesche <typo3@joergboesche.de>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>