add libsass dependency and libsass support
add bootstrap-sass submodule
base styling using bootstrap and scss
fix wrong submodule and settle branch
add setup.cfg for libsass-python
change submodule git protocol for anonymous access
upgrade libsass-python
fix header, fix body width
add footer
upgrade gcc for build
upgrade to v3.3.0
change html5shiv to submodule
change gcc install script
Merge pull request #47 from item4/frontend/bootstrap

Frontend/bootstrap
count_by_classes
create table for wikipedia entities like artists and works. in order to align with tvtropes entities.
adjust test
adjust alembic auto generate files.
remove unused alembic version
single table inheritance design