Introduce keyboard layout, print time

1. can configure if it is sv or en keyboard in env.el
2. use the other window when using helm
3. print time function. time no longer showed on mode line
Use <f6> to eval elisp buffer

f6 is used to run project. For elisp,
it is to eval a buffer.

f1 is then used to print time in the
echo area, as time is no longer showed
on the mode line