Update: vwm.rc is now 1.1

Changes:

- Put the "how-to" in "vwm.txt" instead of comments in "vwm.rc". Should be more understandable, now.

- Improve vwm's tooltip and popup interaction. Should be less conflicts.

- Removed the "vwm_alpha.pop" and "vwm_alphaex.pop" files.

- Rewrote the popup and add a !vwm_popupbuild to rebuild the popup instead of performing f**g !reload.

- add dynamic information to the popup.