Added unittest2
Merge pull request #87 from pdehaye/fix/trivial

Added unittest2
mentioning to use a global .gitignore for everyone
sage knowls
button
to populate the sage knowl with a-invariants
fixed sage ''elliptic curve torsion generators'' command
Merge pull request #92 from jbalakrishnan/ecknowl

knowls and more on ec pages
fixed sage torsion subgroup gens
Merge pull request #94 from jbalakrishnan/ecfixes

fixed sage torsion subgroup gens
Small fix for Dirichlet character L-functions

The code was checking the values of the character to see if it is real,
and there was an issue where it was trying to compute the imaginary
part of a really complicated algebraic number exactly. This takes a long
time. This is changed now so that we just use multiplicative_order() to
determine if the character is real.