Fix ?dbg=1 loading with xsiframe linker

The xsiframe bootstrap uses str.indexOf("gerrit_ui.nocache.js") on
script tags to find the URL of the module. Add a prefix to the
debug module to ensure the indexOf still finds the debug code.

Change-Id: I77aa0cd3415f1e2d94cbf058ce5007e1dd475e34
2 files changed