Merge pull request #1524 from hypothesis/isolate-bootstrap-js

Rework application bootstrap.

h/static/bootstrap.js

+var Klass = window.Annotator.Host;
+var docs = 'https://github.com/hypothesis/h/blob/master/README.rst#customized-embedding';
+var options = {
+  app: jQuery('link[type="application/annotator+html"]').attr('href'),
+  Heatmap: {container: '.annotator-frame'},
+  Toolbar: {container: '.annotator-frame'}
+};
+
+if (window.hasOwnProperty('hypothesisRole')) {
+  if (typeof window.hypothesisRole === 'function') {
+    Klass = window.hypothesisRole;
+  } else {
+    throw new TypeError('hypothesisRole must be a constructor function, see: ' + docs);
+  }
+}
+
+if (window.hasOwnProperty('hypothesisConfig')) {
+  if (typeof window.hypothesisConfig === 'function') {
+    options = window.hypothesisConfig();
+  } else {
+    throw new TypeError('hypothesisConfig must be a function, see: ' + docs);
+  }
+}
+
+window.annotator = new Klass(document.body, options);
+window.Annotator.noConflict().$.noConflict(true);

h/static/destroy.js

+if (window.annotator) window.annotator.destroy();
+delete window.annotator;
+delete window.DomTextMapper;
+delete window.DomTextMatcher;