Revert "Fixing spelling"

This reverts commit e4290a988a607cf9b54745b3baa3174892b22576.
Revert "Created ReminderTopicsDigestList Viewlet"

This reverts commit 03958c73764618d834391812b7096cedbac1218c.
Revert "Added ReminderTopicsDigestList viewlet in configure/template"

This reverts commit a0233df8b1bbc71347bc6f5a78dcbbbef1a7c500.
Adding header to reminder digest
Added ReminderTopicsDigestList Viewlet
Refactored WeeklyTopicsDigest to ReminderTopicsDigest
Added reminder digest footer
Removed Read Clip buttons from reminder digest