Updated global search both design wise and added bgp support

1. Stopped shortening host and port names.

2. Added BGP support, you can now search for remote peer IP, AS and AS text.

3. Increased width of dropdown box as it was too restrictive before.

4. Added generate_peer_url function as per other generate_x_url functions.

5. Updated bootstrap form properties for global search as they were slightly wrong.

6. Moved custom styles.css include below typeahead as custom css doesn't work otherwise.