Added orjson, and 'all' to the setup script

* Add "orjson" as install_requires
* Add a new "all" group with common python packages used in Gramps
* Updated the README (bsddb3 made optional, removed sqlite3)

README.md

@@ -25,8 +25,6 @@ The following three packages with GObject Introspection bindings (the gi package
 * [**pango**](http://www.pango.org/) - a library for laying out and rendering of text, with an emphasis on internationalization.
 * [**pangocairo**](http://www.pango.org/) - Allows you to use Pango with Cairo.
 * [**librsvg2**](http://live.gnome.org/LibRsvg) - (SVG icon view) a library to render SVG files using cairo.
-* [**bsddb3**](https://pypi.python.org/pypi/bsddb3/) - Python bindings for Oracle Berkeley database.
-* [**sqlite3**](https://www.sqlite.org/) - Python bindings for SQLite Database library.
 * [**orjson**](https://pypi.org/project/orjson/) - A fast JSON library for Python. Used to increase the performance of Gramps.
 
 The following package is needed for full translation of the interface
@@ -81,6 +79,10 @@ The following packages are **STRONGLY RECOMMENDED** to be installed:
 
 The following packages are optional:
 ------------------------------------
+* [**bsddb3**](https://pypi.python.org/pypi/bsddb3/)
+
+Python bindings for Oracle Berkeley database. Only needed to upgrade older Gramps databases.
+
 * **gspell**
 
  Enable spell checking in the notes.

setup.py

@@ -450,11 +450,19 @@ def run(self):
     cmdclass={"build": build, "test": test},
     packages=packages,
     package_data={"gramps": package_data},
+    install_requires=["orjson"],
     extras_require={
-        "bsddb": ["bsddb3"],
         "image": ["Pillow"],
         "i18n": ["PyICU"],
         "GUI": ["PyGObject", "pycairo"],
+        "all": [
+            "Pillow",
+            "PyGObject",
+            "PyICU",
+            "imagesize",
+            "pycairo",
+            "pycountry",
+        ],
         "testing": ["jsonschema", "mock", "lxml"],
     },
     data_files=data_files,