Uses mouse constants by default but not if entered into form

[emjbishop]

Stitchr automatically uses the mouse constants TRAC*00 and TRBC*00 when using example data and leaving the constant gene name fields blank.

However, if I enter these genes specifically in the TRAC/TRBC gene name fields then:

• TRAC: It uses TRAC*01
• TRBC: It doesn't generate output

Somehow the mouse constants are not being treated as valid input for these fields which they should be.