Sdss-marvin

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- Issue :issue:`680` - Basic context manager functionality for ``marvin.tools.core.MarvinToolsClass``, and relevant documentation for ``Cube`` and ``Maps``. Users can automate closing file handlers when in ``file`` mode, by using ``with`` syntax, alleviating some issues with looping through lists of galaxies.
- ``marvin.tools.core.MarvinToolsClass.close`` method is a self-contained way of closing the underlying data file. It is now called by ``marvin.tools.core.MarvinToolsClass.__del__`` and ``marvin.tools.core.MarvinToolsClass.__exit__``. ``marvin.tools.core.MarvinToolsClass.source_is_fits_hdulist_file`` evaluates whether the object is accessing a FITS HDUList.
- Updated the manga database connection info for JHU

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- **Adds** - support for MaNGA data release MPL-11
- **Adds** - updates to the Marvin documentation on citations
- **Fixes** - Bug with remote access for removed ``emline_tplsigma`` spaxel property. Removed from MPL-10, MPL-11 datamodels.

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- ** Changes** - pinned ``flask-jwt-extended`` package version to ``<4.0``

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- **Changes** - static web images to webp format for better compression and faster load times.

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- Restructuring to simplify setup, dependencies, and tests, for code health.
- **Adds** - New `setup.py` and `setup.cfg` to simplify installation and dependency requirements
- **Adds** - New dependencies ``marvin-brain``, ``marvin-wtforms-alchemy``, ``marvin-sqlalchemy-boolean-search``, ``sdss-tree``, and ``sdss-access``.
- **Changes** - Migrates to ``sdsstools`` for internal logging and config management.
- **Changes** - Removes all external submodules, which have been converted into pypi releases.
- **Changes** - Moves tests outside the python package
- **Fixes** - Issues :issue:`643`, :issue:`644`, :issue:`645`, :issue:`646`

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- **Fixes** :issue:`711` - galaxy page bug when NSA dictionary not available prevents flag modals from appearing