Revert "Add JPope's sandy 70s speedboat theme"

The theme is in the wrong place. Elrond suggested in IRC
that actually it should go in mediagoblin/themes.

This reverts commit 58432bcb8c.

.gitignore

@@ -17,7 +17,7 @@
 /docs/build
 /api-docs/build
 /api-docs/source/mediagoblin*
-/user_dev/*
+/user_dev/
 /paste_local.ini
 /mediagoblin_local.ini
 /mediagoblin.db
@@ -25,9 +25,6 @@
 /kombu.db
 /server-log.txt
 
-# Unignore theme directory
-!/user_dev/themes/
-
 # pyconfigure/automake generated files
 /Makefile
 /autom4te.cache/