Add git configuration

tools/vcs/git/gitattributes

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+*.png diff=nodiff
+*.jpg diff=nodiff
+*.gif diff=nodiff
+*.ttf diff=nodiff
+*.woff diff=nodiff
+*.eot diff=nodiff
+*.svg diff=nodiff
+*.swf diff=nodiff
+*.fla diff=nodiff
+*.m4v diff=nodiff
+*.flv diff=nodiff
+*.ogv diff=nodiff
+*.webm diff=nodiff
+*.mp4 diff=nodiff

tools/vcs/git/gitconfig

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+[user]
+	email = vbrandl@riseup.net
+	name = Valentin Brandl
+	signingkey = 0x7FB009175885FC76
+
+[commit]
+	gpgsign = true
+
+[color]
+	branch = true
+	diff = true
+	grep = true
+	pager = true
+	status = true
+	ui = always
+
+[core]
+	autocrlf = input
+	editor = vim
+
+[push]
+	default = simple
+
+[url "git@github.com:"]
+	insteadOf = gh:
+	insteadOf = github:
+
+[github]
+	user = vbrandl