o_collection_* was easily confused with widgets on the collection tab,
so I renamed everything to be less confusing.
Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>
- Adjust spacing of the FileChooser
- Rename button from OK -> Add
- Add tooltips to the buttons
- Rename column from Path -> Collection
- Filter out files that aren't directories
I only needed this to make the jump from Ocarina 5.10 -> Ocarina 6.0.
It's not needed anymore, now that 6.0 is out.
Signed-off-by: Anna Schumaker <anna@ocarinaproject.net>