split asset view into elements
fix download option in Mime::headers
adding BaseModel::bulkImport()
update export method in Scaffold

- now includes full qualified name for models
- can contain more than one model in a file
- single exports now uses same structure as plural
- use date as default collection filename
allow download and run of /assets
allow bulkImport of Assets via Assets::import()
prepare routes and views for /settings and /export
pass options for import into Assets::import()
adding Configurations::settings()
Merge remote-tracking branch 'origin/feature/redesign' into feature/redesign