Invitations - user experience [PD-847]

Active user, company permissions added
![2014-12-18-140041_771x239_scrot](https://cloud.githubusercontent.com/assets/3379265/5494085/d3581930-86be-11e4-9253-3ded9856cc94.png)

Inactive user, company permissions added
I'm not so pleased with this wording.
![2014-12-18-140343_772x272_scrot](https://cloud.githubusercontent.com/assets/3379265/5494087/d6e338d2-86be-11e4-80dc-7d2c5060e877.png)

Active user, saved search added
![2014-12-18-142349_777x473_scrot](https://cloud.githubusercontent.com/assets/3379265/5494358/979ec45e-86c1-11e4-96aa-d71d143a78bf.png)

Inactive user, saved search added
![2014-12-18-142237_784x555_scrot](https://cloud.githubusercontent.com/assets/3379265/5494343/6b34677a-86c1-11e4-85bb-9d2497ae4e24.png)