Various updates in git's global configuration

.gitconfig

@@ -1,35 +1,45 @@
 [user]
-	name = Emmanuel Bouthenot
-	email = kolter@openics.org
-	signingkey = 929D42C3
+    name = Emmanuel Bouthenot
+    email = kolter@openics.org
+    signingkey = 929D42C3
 
 [alias]
-	br = branch
-	st = status
-	l = log --graph --decorate --pretty=format:\"%h %C(magenta)%ci%Creset%C(yellow)%d %Creset%s %C(cyan)%cn <%cE>\"
-	spull = submodule foreach 'git pull'
+    br = branch
+    st = status
+    s = status --untracked-files=no
+    sa = status --untracked-files=all
+    d = diff
+    dh = diff HEAD
+    dc = diff --cached
+    ci = commit
+    co = checkout
+    l = ! export LESS=-R GIT_PAGER=less && git log --graph --decorate --pretty=format:\"%h %C(magenta)%ci%Creset%C(yellow)%d %Creset%s %C(cyan)%cn <%cE>\"
+    ls = ls-files
+    ign = ls-files -o -i --exclude-standard
+    unstage = reset HEAD
+    spull = submodule foreach 'git pull'
 
 [color]
-	ui = auto
-	pager = true
+    ui = auto
+    pager = false
 
 [color "diff"]
-	meta = green
-	frag = yellow
-	old = magenta
-	new = cyan
+    meta = green
+    frag = yellow
+    old = magenta
+    new = cyan
 
 [color "status"]
-	header = bold blue
-	added  = green
-	changed = bold red
-	untracked = bold yellow
+    header = bold blue
+    added  = green
+    changed = bold red
+    untracked = white
 
 [merge]
-	tool = vimdiff
+    tool = vimdiff
 
 # git.debian.org specifics
 [url "git://anonscm.debian.org"]
-	insteadOf = "git://git.debian.org"
+    insteadOf = "git://git.debian.org"
 [url "ssh://git.debian.org"]
-	pushInsteadOf = "git://git.debian.org"
+    pushInsteadOf = "git://git.debian.org"