only mount the extensions vendor dir if it is writable
only mount the extensions vendor dir if it is writable

hugin2005/bolt,Intendit/bolt,hugin2005/bolt,kendoctor/bolt,skript-cc/bolt,hugin2005/bolt,rarila/bolt,GawainLynch/bolt,GDmac/bolt,romulo1984/bolt,HonzaMikula/masivnipostele,richardhinkamp/bolt,winiceo/bolt,HonzaMikula/bolt,xeddmc/bolt,hannesl/bolt,electrolinux/bolt,CarsonF/bolt,Eiskis/bolt-base,kendoctor/bolt,Calinou/bolt,Intendit/bolt,rossriley/bolt,xeddmc/bolt,Calinou/bolt,bywatersolutions/reports-site,nantunes/bolt,richardhinkamp/bolt,nantunes/bolt,tekjava/bolt,joshuan/bolt,xeddmc/bolt,Calinou/bolt,one988/cm,hannesl/bolt,bywatersolutions/reports-site,Eiskis/bolt-base,kendoctor/bolt,joshuan/bolt,Raistlfiren/bolt,HonzaMikula/bolt,bolt/bolt,codesman/bolt,pygillier/bolt,bolt/bolt,Raistlfiren/bolt,bolt/bolt,joshuan/bolt,winiceo/bolt,pygillier/bolt,marcin-piela/bolt,hannesl/bolt,GDmac/bolt,romulo1984/bolt,cdowdy/bolt,codesman/bolt,rossriley/bolt,skript-cc/bolt,electrolinux/bolt,rarila/bolt,Raistlfiren/bolt,tekjava/bolt,rarila/bolt,lenvanessen/bolt,winiceo/bolt,hugin2005/bolt,bolt/bolt,bywatersolutions/reports-site,GawainLynch/bolt,HonzaMikula/masivnipostele,GawainLynch/bolt,rossriley/bolt,cdowdy/bolt,GDmac/bolt,nikgo/bolt,marcin-piela/bolt,HonzaMikula/masivnipostele,one988/cm,Intendit/bolt,nikgo/bolt,richardhinkamp/bolt,kendoctor/bolt,hannesl/bolt,codesman/bolt,rossriley/bolt,one988/cm,bywatersolutions/reports-site,tekjava/bolt,Intendit/bolt,Eiskis/bolt-base,CarsonF/bolt,cdowdy/bolt,joshuan/bolt,nantunes/bolt,marcin-piela/bolt,marcin-piela/bolt,Raistlfiren/bolt,richardhinkamp/bolt,pygillier/bolt,nantunes/bolt,Eiskis/bolt-base,rarila/bolt,skript-cc/bolt,lenvanessen/bolt,nikgo/bolt,GDmac/bolt,romulo1984/bolt,lenvanessen/bolt,pygillier/bolt,cdowdy/bolt,HonzaMikula/bolt,Calinou/bolt,xeddmc/bolt,winiceo/bolt,GawainLynch/bolt,electrolinux/bolt,tekjava/bolt,CarsonF/bolt,codesman/bolt,electrolinux/bolt,lenvanessen/bolt,HonzaMikula/bolt,nikgo/bolt,one988/cm,skript-cc/bolt,romulo1984/bolt,CarsonF/bolt,HonzaMikula/masivnipostele