Merge pull request #467 from kgryte/commit-info-button-tooltips

Set title attributes to support tooltip info

Author: fcollonval

src/components/SinglePastCommitInfo.tsx

@@ -169,6 +169,7 @@ export class SinglePastCommitInfo extends React.Component<
                 discardFileButtonStyle
               )}
               onClick={this.showDeleteCommit}
+              title="Discard changes introduced by this commit"
             />
             <button
               className={classes(
@@ -177,6 +178,7 @@ export class SinglePastCommitInfo extends React.Component<
                 revertButtonStyle
               )}
               onClick={this.showResetToCommit}
+              title="Discard changes introduced *after* this commit"
             />
           </div>
           <div>