Docs: PyAPI: Improve website responsiveness on narrow displays

- Allow long enums to break early
- Allow long titles to wrap
- Colloapse hlist to few collumns if needed

This fixes a few of the bigger issues, some more tweaks are still needed 
in some places

doc/python_api/static/css/theme_overrides.css

@@ -2,6 +2,7 @@
 .field-list > dd > p {
    max-height: 245px;
    overflow-y: auto !important;
+   word-break: break-word;
 }
 
 /* Hide home icon in search area */
@@ -11,3 +12,15 @@
 .wy-nav-content {
     max-width: 1000px !important;
 }
+
+/* Fix long titles on mobile */
+h1, h2, h3, h4, h5, h6 {word-break: break-all}
+
+/* Temp fix for https://github.com/readthedocs/sphinx_rtd_theme/pull/1109 */
+.hlist tr {
+   display: -ms-flexbox;
+   display: flex;
+   flex-flow: row wrap;
+ }
+
+.hlist td {margin-right: auto}