Tweaks to component lifecycle guide
Tweaks to component lifecycle guide

- General language/clarity cleanup
- Move from numeric IDs to semantic IDs (this is more friendly to
  refactorings in the future)
- Remove mention of `_super()` - `didInsertElement` should not require
  this on Ember.Component subclasses. Subclasses of other components
  should follow the normal rules of `_super()` invocation

boztek/guides,MarkMT/guides,ubuntuvim/guides,greyhwndz/guides,HeroicEric/guides,jackfranklin/guides,greyhwndz/guides,MarkMT/guides,jkarsrud/guides,bmac/guides,HeroicEric/guides,jkarsrud/guides,boztek/guides,bmac/guides,skaterdav85/guides,vikram7/guides,MarkMT/guides,bmac/guides,davidpett/guides,nicobot/guides,jackfranklin/guides,ubuntuvim/guides,vikram7/guides,skaterdav85/guides,davidpett/guides,HeroicEric/guides,bmac/guides,tleskin/guides,tleskin/guides,vikram7/guides,skaterdav85/guides,jkarsrud/guides,knownasilya/guides,knownasilya/guides,knownasilya/guides,skaterdav85/guides,ubuntuvim/guides,ubuntuvim/guides,greyhwndz/guides,davidpett/guides,tleskin/guides,MarkMT/guides,jackfranklin/guides,davidpett/guides,knownasilya/guides,boztek/guides,nicobot/guides,nicobot/guides,jkarsrud/guides