Added "select all" and "select none" options to multiselect. Fixes #1098.
Added "select all" and "select none" options to multiselect. Fixes #1098.

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