Update bower meta data to angular-translate domain
Add example/demo for partial loader usage
feat(directive): translate-cloak supports optional value for cloaking

```
<div translate-cloak="my.translation.key">…</div>
```

If a value for translate-cloak was found, following actions will take place
1. the cloak will be applied when the translation could not be resolved
2. the cloak will be removed when the translation could be resolved

Relates #666
docs(example): fix example code for filter

Fixes #782
docs(migration): add missing german part
docs(unit tests): add missing german part (WIP: copy-of)
Fix typo in demo
fix(partialloader): fix possible circular dependency

This is a bugfix for b685601 (affecting 0.4.x).

Fixes #766
Reformat package.json, update bower dependency
Add contributors
Reformat bower.json, fix old dependency
Update default angular to latest 1.2.x
Bump version
Merge branch 'canary'
Append changelog 2.4.2