Automated the need to update Bukkit import paths

Maven saves the day again! No more messing with changing the MC and
bukkit import path for version changes. , Ex: net.minecraft.*.v1_5_R2 =>
net.mincraft.*.v1_5_R3, just set the POM properties for old version and
current version, the plug-in will replace everything for you :D
Renamed the `current` auto-replace prop. to `new`

...for the sake of clarity + a comment!
Merge Conflict Resolution attempt #1
Ease of Use: Forge/MC versions in POM

Rather than a slurry of numbers for the ForgeMod dependency version, new
properties let you know ignore the depend. and focus on updating what
you need to to get things running again...
Merge remote-tracking branch 'origin/feature-maven-integration'
Merge remote-tracking branch 'origin/code-clean-up'