Update git & zsh user config

tasks/user_cfg/files/dotfiles/gitconfig

@@ -20,6 +20,7 @@
 	ci = commit
 	co = checkout
 	diff = diff --ignore-all-space
+	fp = fetch --prune
 	lga = log --graph --oneline --decorate --since=10days --all
 	lgla = log --graph --oneline --decorate --date=short --all
 	lg = log --graph --oneline --decorate --since=10days
@@ -33,6 +34,9 @@
 [merge]
 	tool = meld
 
+[checkout]
+	defaultRemote=origin
+
 [url "ssh://git@github.com/"]
 	pushInsteadOf = https://github.com/
 
@@ -41,3 +45,6 @@
 
 [url "ssh://git@lab.frogg.it/"]
 	pushInsteadOf = https://lab.frogg.it/
+
+[init]
+	defaultBranch = stable