Disable the deleting of the default type storage location
Fixed thumbnail saving when file storage location is set.
Removed object type check.
Added underline plugin to redactor.

I mean come on, who doesn’t need to underline something in their
content ;)
Multilingual fixes

- add concrete.multilingual.default_source_locale configuration (defaulting to en_US)
- allow users to configure concrete.multilingual.default_source_locale
- localize dates in system/multilingual/translate_interface
- bugfix hide progress status of locale if it's the source one
tweaks to tests
Merge branch 'develop' of github.com:concrete5/concrete5-5.7.0 into develop
fix version panels bein craaaaazaaaaay
Refactor panel collapsable group javascript to allow for animations
page attributes
Merge branch 'develop' of github.com:concrete5/concrete5-5.7.0 into develop
Merge pull request #1676 from mlocati/multilingual-fixes

Some more multilingual fixes
fixing
page type permissions on update
Update Punic to v1.2.3
Don't save translations file for the source locale
Merge pull request #1680 from mlocati/update-punic-1.2.3

Update Punic to v1.2.3
Merge pull request #1675 from olsgreen/redactor-underline

Added underline plugin to redactor.
Merge pull request #1682 from mlocati/multilingual-fix-filesave

Don't save translations file for the source locale
Merge pull request #1601 from Mnkras/hotfix/disable-default-delete

Disable the deleting of the default type storage location