"Show reblogs" per-follower UI/database changes

TODO:

* Tests (particularly for FollowRequests).
* Anything to respect the setting when putting reblogs in timelines.

app/javascript/mastodon/features/account_timeline/components/header.js

@@ -14,6 +14,7 @@ export default class Header extends ImmutablePureComponent {
     onFollow: PropTypes.func.isRequired,
     onBlock: PropTypes.func.isRequired,
     onMention: PropTypes.func.isRequired,
+    onReblogToggle: PropTypes.func.isRequired,
     onReport: PropTypes.func.isRequired,
     onMute: PropTypes.func.isRequired,
     onBlockDomain: PropTypes.func.isRequired,
@@ -40,6 +41,10 @@ export default class Header extends ImmutablePureComponent {
     this.props.onReport(this.props.account);
   }
 
+  handleReblogToggle = () => {
+    this.props.onReblogToggle(this.props.account);
+  }
+
   handleMute = () => {
     this.props.onMute(this.props.account);
   }
@@ -80,6 +85,7 @@ export default class Header extends ImmutablePureComponent {
           me={me}
           onBlock={this.handleBlock}
           onMention={this.handleMention}
+          onReblogToggle={this.handleReblogToggle}
           onReport={this.handleReport}
           onMute={this.handleMute}
           onBlockDomain={this.handleBlockDomain}