Open up the tracker_name regex in urls.py to accept anything except a /
Open up the tracker_name regex in urls.py to accept anything except a /

This provides a temporary fix, but I don't know how dangerous this is; it will
probably be better to restrict what users can enter in tracker_name and clean
the field. But that can be done when the /customs/ pages are worked on.

heeraj123/oh-mainline,nirmeshk/oh-mainline,moijes12/oh-mainline,vipul-sharma20/oh-mainline,mzdaniel/oh-mainline,vipul-sharma20/oh-mainline,willingc/oh-mainline,mzdaniel/oh-mainline,eeshangarg/oh-mainline,sudheesh001/oh-mainline,waseem18/oh-mainline,mzdaniel/oh-mainline,willingc/oh-mainline,SnappleCap/oh-mainline,campbe13/openhatch,eeshangarg/oh-mainline,mzdaniel/oh-mainline,vipul-sharma20/oh-mainline,ehashman/oh-mainline,eeshangarg/oh-mainline,waseem18/oh-mainline,ojengwa/oh-mainline,mzdaniel/oh-mainline,jledbetter/openhatch,ehashman/oh-mainline,nirmeshk/oh-mainline,sudheesh001/oh-mainline,ojengwa/oh-mainline,sudheesh001/oh-mainline,campbe13/openhatch,moijes12/oh-mainline,Changaco/oh-mainline,sudheesh001/oh-mainline,onceuponatimeforever/oh-mainline,willingc/oh-mainline,onceuponatimeforever/oh-mainline,onceuponatimeforever/oh-mainline,SnappleCap/oh-mainline,openhatch/oh-mainline,ojengwa/oh-mainline,SnappleCap/oh-mainline,waseem18/oh-mainline,moijes12/oh-mainline,nirmeshk/oh-mainline,mzdaniel/oh-mainline,vipul-sharma20/oh-mainline,campbe13/openhatch,heeraj123/oh-mainline,openhatch/oh-mainline,heeraj123/oh-mainline,openhatch/oh-mainline,jledbetter/openhatch,ojengwa/oh-mainline,openhatch/oh-mainline,moijes12/oh-mainline,heeraj123/oh-mainline,jledbetter/openhatch,SnappleCap/oh-mainline,Changaco/oh-mainline,waseem18/oh-mainline,moijes12/oh-mainline,ehashman/oh-mainline,eeshangarg/oh-mainline,heeraj123/oh-mainline,ehashman/oh-mainline,eeshangarg/oh-mainline,ehashman/oh-mainline,onceuponatimeforever/oh-mainline,Changaco/oh-mainline,willingc/oh-mainline,mzdaniel/oh-mainline,onceuponatimeforever/oh-mainline,willingc/oh-mainline,jledbetter/openhatch,openhatch/oh-mainline,sudheesh001/oh-mainline,campbe13/openhatch,ojengwa/oh-mainline,campbe13/openhatch,waseem18/oh-mainline,nirmeshk/oh-mainline,SnappleCap/oh-mainline,nirmeshk/oh-mainline,Changaco/oh-mainline,vipul-sharma20/oh-mainline,Changaco/oh-mainline,jledbetter/openhatch