Fix error caused by templates in ConditionalExpressions (jsx-indent)

Template strings are constructed differently from other tokens in
espree. Other tokens are created by the Token class and are thus
Token class objects. They look like this:

```
Token {
  type: 'String',
  value: '"bar"',
  start: 44,
  end: 49,
  loc:
   SourceLocation {
     start: Position { line: 4, column: 11 },
     end: Position { line: 4, column: 16 } },
  range: [ 44, 49 ] }
```

Template tokens, however, are constructed differently and end up as
plain JavaScript objects, which look like this:

```
{ type: 'Template',
  value: '`bar`',
  loc:
   { start: Position { line: 4, column: 11 },
     end: Position { line: 4, column: 16 } },
  range: [ 44, 49 ] }
```

See: [espree's token-translator.js](https://github.com/eslint/espree/blob/58f75be6b89d8904b6366ed368045cb02c4a4e33/lib/token-translator.js#L43)

As a result of this different construction, the `start` and `end`
properties are not present on the template token object. To correct this
I've changed to using the `range` property, which I infer to be more
proper given the method it is being passed into is called
`getNodeByRangeIndex`. I also think we can safely rely on `range` being
present on all token types.

Fixes #1061

lib/rules/jsx-indent.js

@@ -275,7 +275,8 @@ module.exports = {
         do {
           prevToken = sourceCode.getTokenBefore(prevToken);
         } while (prevToken.type === 'Punctuator');
-        prevToken = sourceCode.getNodeByRangeIndex(prevToken.start);
+        prevToken = sourceCode.getNodeByRangeIndex(prevToken.range[0]);
+
         while (prevToken.parent && prevToken.parent.type !== 'ConditionalExpression') {
           prevToken = prevToken.parent;
         }

tests/lib/rules/jsx-indent.js

@@ -410,6 +410,47 @@ ruleTester.run('jsx-indent', rule, {
     ].join('\n'),
     options: [4, {indentLogicalExpressions: true}],
     parserOptions: parserOptions
+  }, {
+    code: [
+      '<span>',
+      '  {condition ?',
+      '    <Thing',
+      '      foo={`bar`}',
+      '    /> :',
+      '    <Thing/>',
+      '  }',
+      '</span>'
+    ].join('\n'),
+    options: [2],
+    parserOptions: parserOptions
+  }, {
+    code: [
+      '<span>',
+      '  {condition ?',
+      '    <Thing',
+      '      foo={"bar"}',
+      '    /> :',
+      '    <Thing/>',
+      '  }',
+      '</span>'
+    ].join('\n'),
+    options: [2],
+    parserOptions: parserOptions
+  }, {
+    code: [
+      'function foo() {',
+      '  <span>',
+      '    {condition ?',
+      '      <Thing',
+      '        foo={super}',
+      '      /> :',
+      '      <Thing/>',
+      '    }',
+      '  </span>',
+      '}'
+    ].join('\n'),
+    options: [2],
+    parserOptions: parserOptions
   }],
 
   invalid: [{