Reworked buildscript

- Added several artifacts.
  - ```api``` which can be added as a lib to dependant projects.
  - ```dev``` which contains the deobfuscated mod and can be used in a development environment.
  - ```src``` The complete source code.
- Added tasks
  - ```uploadArchives``` uploads artifacts to a maven repository.
  - ```install``` copies artifacts to the local maven repository (```~/.m2```).
  - ```bumpMajor``` increments the major version number.
  - ```bumpSeries``` increments the minor version number.
  - ```bumpRevision``` increments the version's revision number.
  - ```echoVersion``` displays the version number of the next build.