gitweb: Make blame and snapshot a feature.
gitweb: Make blame and snapshot a feature.

This adds blame and snapshot to the feature associative array.  This
also helps in enabling or disabling these features via GITWEB_CONFIG
and overriding if allowed via project specfic config.

Signed-off-by: Aneesh Kumar K.V <f511f818e8a0748edef6b9ee378967da9ed0c78f@gmail.com>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git