Case insensitive string comparison for items when comparing with existing items.  Fixes some false errors.  Also remove stray characters from manufacturer logging.
Case insensitive string comparison for items when comparing with existing items.  Fixes some false errors.  Also remove stray characters from manufacturer logging.

GeoffYoung/snipe-it,kpawelski/ITManager,tiagom62/snipe-it,snipe/snipe-it,jasonspriggs/snipe-it,madd15/snipe-it,GeoffYoung/snipe-it,kpawelski/ITManager,bytepark/snipe-it,dmeltzer/snipe-it,madd15/snipe-it,madd15/snipe-it,kpawelski/ITManager,ppavlov28/snipe-it,mtucker6784/snipe-it,dkmansion/snipe-it,dkmansion/snipe-it,dmeltzer/snipe-it,mtucker6784/snipe-it,snipe/snipe-it,dkmansion/snipe-it,uberbrady/snipe-it,tiagom62/snipe-it,uberbrady/snipe-it,jasonspriggs/snipe-it,bytepark/snipe-it,jasonspriggs/snipe-it,bytepark/snipe-it,dkmansion/snipe-it,ixmid/snipe-it,bytepark/snipe-it,GeoffYoung/snipe-it,ixmid/snipe-it,uberbrady/snipe-it,ppavlov28/snipe-it,tiagom62/snipe-it,anuj-rajput/snipe-it,mtucker6784/snipe-it,tiagom62/snipe-it,ixmid/snipe-it,GeoffYoung/snipe-it,kpawelski/ITManager,snipe/snipe-it,anuj-rajput/snipe-it,ixmid/snipe-it,anuj-rajput/snipe-it,ppavlov28/snipe-it,anuj-rajput/snipe-it,mtucker6784/snipe-it,snipe/snipe-it,madd15/snipe-it,dmeltzer/snipe-it,uberbrady/snipe-it,jasonspriggs/snipe-it,mtucker6784/snipe-it,uberbrady/snipe-it,dmeltzer/snipe-it