Link to issues

Entering the whole key for the issue or issue keys with 2 brackets in the front and the back will link to the issue.

When you type:

This seems to be the same phenomenon as we saw in [[BLG-104]]. Please refer BLG-87 also.

It will appear as:

This seems to be the same phenomenon as we saw in BLG-104. Please refer BLG-87 also.