Fix alt and title tags for popup & showimage, height/width for showImage
Fix alt and title tags for popup & showimage, height/width for showImage

Fixes #4022 and #2275.

All credit for for the title fix to @GDmac!

rarila/bolt,Raistlfiren/bolt,joshuan/bolt,rossriley/bolt,nantunes/bolt,rarila/bolt,one988/cm,joshuan/bolt,Raistlfiren/bolt,cdowdy/bolt,nantunes/bolt,richardhinkamp/bolt,romulo1984/bolt,richardhinkamp/bolt,one988/cm,rarila/bolt,rossriley/bolt,CarsonF/bolt,joshuan/bolt,HonzaMikula/masivnipostele,romulo1984/bolt,CarsonF/bolt,Intendit/bolt,HonzaMikula/masivnipostele,one988/cm,lenvanessen/bolt,GawainLynch/bolt,bolt/bolt,GawainLynch/bolt,richardhinkamp/bolt,one988/cm,CarsonF/bolt,electrolinux/bolt,romulo1984/bolt,bolt/bolt,Intendit/bolt,Intendit/bolt,electrolinux/bolt,romulo1984/bolt,bolt/bolt,Raistlfiren/bolt,HonzaMikula/masivnipostele,nikgo/bolt,CarsonF/bolt,Intendit/bolt,cdowdy/bolt,electrolinux/bolt,nantunes/bolt,lenvanessen/bolt,cdowdy/bolt,GawainLynch/bolt,lenvanessen/bolt,rossriley/bolt,rarila/bolt,bolt/bolt,nikgo/bolt,nikgo/bolt,electrolinux/bolt,nantunes/bolt,joshuan/bolt,GawainLynch/bolt,nikgo/bolt,cdowdy/bolt,lenvanessen/bolt,rossriley/bolt,HonzaMikula/masivnipostele,richardhinkamp/bolt,Raistlfiren/bolt