Fixed the line:

        self.Q_fe = self.Q_fe = float(sqrt(Integer(self.conductor))/2.**len(self.nu_fe)/pi**(len(self.mu_fe)/2.+len(self.nu_fe)))

by changing the divisions by 2 to division by 2. (i.e. floating point).
Integer division returns an int and so, for odd len(self.mu_fe), the
above was producing wrong powers of pi.
Add citation link at bottom of every page.
Merge branch '2013_14_a' of git://github.com/mrubinst/lmfdb into quickmerge
Fixing EP of Symmetric square. Moving database calls for L-function to new file LfunctionDatabase. Improving db interface for Maass forms
Fix small conflict
Removing print statements from L-function files
Change default logging level, move usage statement.

I put the usage statement in a file so that we can see it. We really
ought to change the start script so that it doesn't actually start when
passed --help, but this is a short term fix.
Removing more print statements

This removes some print statements from HeckeCharacters.py and from some
maass form files.
Removed more print statements, and a broken test.
Fix logging default level so that logfocus actually works.
Removing more print statements.
Dirichlet series in html instead of MathJax, so that it wraps when you
have a small screen (such as in a talk).