Updated configs

- Auto-complete requires more characters before starting
- Cedet now properly checks that Semantic has been loaded first, and
  loads it first (used to just load it a second time)
- Semantic raises an error if Cedet is not loaded beforehand
- Semantic doesn't need bovine/clang
- Added a few options to EDE
- Python-mode: Removed the extra indentation, added some django
  configuration
- Added (basic) support for Rust

Signed-off-by: JP-Ellis <coujellis@gmail.com>