Merge pull request #1 from impresspages/master

merge 4.2.1
GRID breadcrumbField setting
make colorbox work with other rel attributes
Merge branch 'master' of github.com:impresspages/ImpressPages
update docblock
Fix text field preview when the value is 0. Fixes #563
Merge branch 'master' of github.com:impresspages/ImpressPages
add missing ipBeforeLanguageDeleted event.
Merge pull request #566 from chouex/master

add missing ipBeforeLanguageDeleted event.
Fix menu creation method type setting
fix Captcha compatibility with urlOverride
Merge branch 'master' of github.com:impresspages/ImpressPages
html2text utf8 support
add link to the author of html2text
choose new page position
Merge branch 'master' of github.com:impresspages/ImpressPages
remove console.log
don't show GRID breadcrumb in first level
Remember last option in Pages section
Update Storage.php

Remove all storage values for the specified plugin