Only try jumping to #Ppkg on source view

closes gh-755.
add Google login
provide help to users who have not set up email forwarding

Add a short help message to the login screen for any users who may not
have not yet set up email forwarding for @cpan.org.
Merge pull request #758 from ktdreyer/email-hint

cannot connect PAUSE account
fix links to matrix.cpantesters.org

links should be in the form

    "...?dist=Module+Version" (with a URI escaped space)

and not

    "...?dist=Module-Version"
Merge pull request #766 from eserte/master

Links to matrix.cpantesters.org
Use named (allowed) scripts for custome_score queries
add play-perl profile
Merge pull request #772 from yanick/play-perl

add play-perl profile
prefer pod over pm if both contain pod, refs #724
Offer link to pod view of a source file if it has pod
Expand root files array to add 'cpanfile'

Closes gh-803.
Syntax highlight 'cpanfile' as perl
merge