Move docs back to root, move onionshare_gui into briefcase app, and make modifications so briefcase app will work

docs/source/conf.py

@@ -0,0 +1,34 @@
+import sphinx_rtd_theme
+import sphinx_intl
+
+
+project = "OnionShare"
+author = copyright = "Micah Lee, et al."
+version = release = "2.3"
+
+extensions = ["sphinx_rtd_theme"]
+templates_path = ["_templates"]
+exclude_patterns = []
+
+languages = [
+    ("Español", "es"),
+    ("English", "en"),
+    ("Українська", "uk"),
+]
+
+versions = ["2.3"]
+
+html_theme = "sphinx_rtd_theme"
+html_logo = "_static/logo.png"
+html_favicon = "_static/favicon.ico"
+html_theme_options = {}
+html_context = {"langs": languages, "versions": versions, "current_version": release}
+html_static_path = ["_static"]
+html_css_files = ["custom.css"]
+html_show_sourcelink = False
+html_show_sphinx = False
+
+# sphinx-intl
+language = "en"
+locale_dirs = ["locale/"]
+gettext_compact = False