Regen .kproj files

- does not seem to have a negative impact
- e.g. sample web projects run / debug fine

Included changes VS injected to avoid noise later.

/cc @PradeepKadubandi @BillHiebert @yishaigalatzer 
@BillHiebert what .props file?  there's one property (`TargetKREVersion`) saved in the .kproj.user file but no new property files are generated when running or debugging a web project.

what if anything did we lose moving from an explicit `OutputType` to (I assume) inferring the output type from whether or not `DevelopmentServerPort` is set?  alternatively, what file should we be creating and checking into GitHub?