Add nobackend tests to travis
Add doc-build to travis
Typo

vim insert mode is difficult.
Add xmlto to travis for doc build
Move nobackend test to end

It requires sdig which regression-tests compiles.
Add links to make xmlto work

Fixes:
$ make
./expand < pdns.xml > pdns-expanded.xml
xmlto txt -m config.xsl  pdns-expanded.xml
No way to convert HTML to text found.
Try either installing text web browser(lynx/w3m/links) or use option --with-fop
make: *** [pdns.txt] Error 1
Update notification message

Will make the notifications a bit less on #powerdns-dev.
Add dblatex to travis for doc-build
Merge pull request #788 from cyclops1982/travis

Travis updates