The log comment on undelete contains a hint about the count of restored
files and/or revisions.
Move this text out of the comment to allow longer comments. Also makes
this information readable inside the api.
This is only for new log entries. Old entries will still show the hint
from the comment and no data in the api.
Change-Id: I9e30eb1271656bb81259a408210e9a282e949c57
Test the LogFormatter by passing old and new database rows to it.
The text shown on Special:Log and the api result returned by
list=logevents is tested.
Change-Id: Icfcba506f4fa3010cdaf973aa2df23b6e92c25e4
