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new parts: sns share
sns_share parts: change ja name
add field: cms_node.page_layout_id
fix: sns_share.part html
add file storage option
fix .gitignore
fix fs
fix save button label
fix: remove event for attachment file
fix: SS::Relation::File

no grid_fs
Remove empty header lines
Merge pull request #38 from kaosf/remove-empty-header-lines

Remove empty header lines
Ignore YARD files and directories
contact info.
Merge pull request #39 from kaosf/ignore-yard-items

Ignore YARD files and directories
add preview link on detail page
reject update at concurrent access