Include facets in the rest response.
Only print the warning about '.' in type, when it is not a percolator type.
[Docs] Added _source filtering to documentation

Relates to #3301
Fixing CompletionFieldMapper.isReservedChar() to take all relevant chars in account
Cat API: Add h parameter to apis, allowing to return columns and descriptions for them
closes #4262
Add hole character to the reverved characters for completion suggester