Plugin AP List: New Feature - Effective portal level

The effective level calculated from following data: current energy, shields, resonators distance, and origin portal level.

effective energy = current energy * effect of shields * effect of resos distance
Use it to find the correspond effective level. And then if the effective level is less than origin portal level, average with origin portal level by % of energy left, to account for portal damage do to player.

![plugin-ap-list-eff-lv](https://f.cloud.github.com/assets/2596446/289931/1623756c-92cd-11e2-863c-80856caa0e30.png)