let rules and transforms directories be in the vera root dir

[Gaëtan Lehmann]

the scripts directory doesn't add much to the directory layout

[Gaëtan Lehmann]

let rules and transforms directories be in the vera root dir - fix #30

→ <<cset 2502180e3087>>

[Gaëtan Lehmann]

also allow rules and transforms dir in the vera root for the legacy command line - see #30

→ <<cset 2e11e69176f1>>