move widget-log{in,out}.html under auth/ where they belong

diff --git a/templates/widget-login.html b/auth/templates/widget-login.html
similarity index 100%
rename from templates/widget-login.html
rename to auth/templates/widget-login.html

diff --git a/templates/widget-logout.html b/auth/templates/widget-logout.html
similarity index 100%
rename from templates/widget-logout.html
rename to auth/templates/widget-logout.html