Add target to view last log file [sf#154]

[tomschr]

Reported by fsundermeyer on 2013-05-28 08:17 UTC
Add a "show-log" target that shows the last generated log file.
This could be achieved by adding a link lastlog every time a new log file is written ...

[tomschr]

Commented by fsundermeyer on 2013-05-29 13:17
...and add an option --target=(color-pdf|html|singlehtml|...) to get the last log file for "target"

[fsundermeyer]

Logs are only really useful when running daps in debug mode, so in case of a problem you'd probably do a fresh rujn of daps --debug anyway.
Fixed this by showing a path to the log file every time you run daps --debug.