Make prominent search input boxes autofocus

[hjacobs]

It would be really convenient to automatically focus the following primary search boxes:

• Top search box on https://demo.zmon.io/#/entities
• Top search box on https://demo.zmon.io/#/check-definitions
• Top search box on https://demo.zmon.io/#/alert-definitions?tab=All
• The team filter drop down search box (shown on all three of the above pages) should focus on opening the team filter

This would get rid of one additional mouse click :smile: .

[hjacobs]

• [x] Top search box on https://demo.zmon.io/#/entities
• [x] Top search box on https://demo.zmon.io/#/check-definitions
• [x] Top search box on https://demo.zmon.io/#/alert-definitions?tab=All
• [x] The team filter drop down search box (shown on all three of the above pages) should focus on opening the team filter

[hjacobs]

Team filter search focus was fixed with #174 .