Support negative lookahead for attributes with duplicated key names

[palourde]

Expected Behavior

Using the search query name:^((?!check_critical).)*$ should return all checks not named check_critical.

Current Behavior

The previous query matches the client name and therefore, the query returns all results.

Possible Solution

Support the check & client aliases when filtering events.

Steps to Reproduce (for bugs)

N/A

Context

N/A

Your Environment

• Uchiwa version used: 0.23.0
• Sensu version used: 0.28.2-1
• Operating System and version (e.g. Ubuntu 14.04): Debian 8.2