Implements the new LJP application format as outlined in #116. In particular:
- The V-32 PDF is replaced by an `.xlsx` sheet.
- The LaTeX generated PDF for the seminar report is replaced by a `.docx` file, generated by `pandoc` from a modified `.tex` file.
- The cost and participants overview from the old PDF can still be generated separately, but is no longer required.
Also adds many fields to `LJPProposal` that are required to generate the full application.
We replace the current environment variable based configuration approach by
reading all local configuration from a `settings.toml` configuration file.
The docker test, development and production setups have been updated to use
the new setup.
The configuration folder also allows overriding every template in a
`config/templates` directory. We use this in a follow-up to move
all local specific templates, e.g. the registration form, into this
config directory.
`make test` now automatically forces a rebuild. Also passing `keepdb=true` runs
the test suite with `--keepdb` which is useful when repeatedly running tests.
Christian Merten