How to change the screensaver lock timeout in Fedora 20 and Gnome

Run this on the command line (in Terminal):

gsettings set org.gnome.desktop.session idle-delay 3600

Change 3600 to anything else you want.  The units are in seconds.

Maximize Window Vertically in Gnome

You can assign it to Alt-v.  Go to Applications > System Tools > System Settings > Keyboard > Shortcuts > Windows > Maximize window vertically, and assign it to Alt-v