Nyall Dawson 5da28ed9f0 [needs-docs][processing] Add tooltips to input types in modeler
...to help clarify for users what the different input types mean.

Fixes #17671, which is a result of unclear distinction between
the uses of vector features vs vector layer inputs.

Tagged as needs-docs, as it may help with documentation for 3.0
2018-01-16 20:35:26 +10:00
..