Log repository path

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Fixed issue #2047: Create a log file with git commands and output

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Do not log at all if MaxLinesInLogfile is set to zero

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Fixed issue #1129: Add Fetch/Pull operations in Show Log window

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Update Changelog.txt

(Fixes issue #2048)

Add date column in stash list / reflog in  2a94bbe89d4c3893fc48ca1be432fa87c4236bce

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>