Cache to RAMdisk in the settings

[Veemel]

Dear developers! Please add the ability to transfer the browser cache to RAMdisk in the settings. Browser kills SSD.

[PeskyHyena]

Good idea. Perhaps a switch that does the equivalent of putting this in `user.js`:

user_pref("browser.cache.disk.enable", false);
user_pref("browser.cache.disk.smart_size.enabled", false);
user_pref("browser.cache.disk_cache_ssl", false);
user_pref("browser.cache.offline.enable", false);
user_pref("browser.cache.memory.enable", true):
user_pref("browser.cache.memory.capacity", 512000);