Fixes issue 441. Added try/except around all the deleting code, and on startup tells the user to make sure DMDirc isn't running else some files might not get removed correctly.
Fixes issue 441.
Added try/except around all the deleting code, and on startup tells the user to make sure DMDirc isn't running else some files might not get removed correctly.


git-svn-id: 50f83ef66c13f323b544ac924010c921a9f4a0f7@3307 00569f92-eb28-0410-84fd-f71c24880f43

DMDirc/DMDirc,ShaneMcC/DMDirc-Client,ShaneMcC/DMDirc-Client,greboid/DMDirc,csmith/DMDirc,greboid/DMDirc,ShaneMcC/DMDirc-Client,csmith/DMDirc,csmith/DMDirc,DMDirc/DMDirc,greboid/DMDirc,DMDirc/DMDirc,csmith/DMDirc,DMDirc/DMDirc,greboid/DMDirc,ShaneMcC/DMDirc-Client