Use prefix notation for component names

Start component names with the kind of element it creates on the page
(button, input, table, card, etc), then follow it with an hierarchy like
set of parts describing what part of the system it operates on.

This makes related components stick together in the directory listing of
components and auto-complete work better.

components/Header.vue

@@ -19,7 +19,7 @@
 				(s:{{ sessionStore.id }} a:{{ accountStore.id }}{{ sessionStore.push ? " push" : null }})
 				{{ accountStore.type }}
 				<NuxtLink to="/account/settings">Settings</NuxtLink>
-				<LogOutButton v-if="accountStore.type !== 'anonymous'"/>
+				<ButtonLogOut v-if="accountStore.type !== 'anonymous'"/>
 			</template>
 			<template v-else>
 				<NuxtLink to="/login">Log In</NuxtLink>