Update index.rst

Missing semicolon.
Merge pull request #126 from emgiezet/patch-1

Documentation Update index.rst
Update validation.xml

Type constraint accepts 'type' option, not 'value'. This is to avoid the following error message "The options "value" do not exist in constraint Symfony\Component\Validator\Constraints\Type"
Merge pull request #127 from Sydney-o9/patch-1

Update validation.xml
Update validation.xml

Replace deprecated constrainte Minlength
Merge pull request #130 from toinouu/patch-1

Update validation.xml
Missing polish translation for message delete button on thread list.