Migrating functions to separate source file. Commented functions will be removed on next commit

Former-commit-id: 34f1a5451e

.bashrc

@@ -136,7 +136,9 @@ fi
 if [ -f ~/.bash_docker ]; then
     . ~/.bash_docker
 fi
-
+if [ -f ~/.bash_functions ]; then
+    . ~/.bash_functions
+fi
 # enable programmable completion features (you don't need to enable
 # this, if it's already enabled in /etc/bash.bashrc and /etc/profile
 # sources /etc/bash.bashrc).