Revert "temporarily disable the vignette, since RForge does not have preview.sty at the moment"

This reverts commit b24ef79b0f24606e97383972206be41d687751f1.
Revert "mv inst/doc to vignettes/"

This reverts commit c8eddb89b063ad615700db52b7b756f9f4adc1ac.
add failing tests
fix regular expression to extract point size from documentclass declaration
add NEWS item
use default reporter, add missing test
Merge branch '34-pointsize-master' (early part)
Merge branch '34-pointsize-master'