Revert "remove default definition of SITE_TITLE; rename to _SITE_TITLE as with other constants of this nature"

This reverts commit 1f56ba13cd69efca4f24a3bce9a8bb8ebcf3ebac.
Revert "fix tabs"

This reverts commit d6cb94145945a47fc843ed9c25197b1ece40cdae.
Revert "update SITE_TITLE customization to work without needing to be pre-defined, make it compatible with unread count now being at start of title"

This reverts commit 8d051fa0769922df69ac737eee9d13dff67095a9.
remove page title stuff for the time being