Reports/filter text edit

https://www.pivotaltracker.com/story/show/61046364

As a user of Reporting, I would like to see my filters displayed as text, with an option to edit them appearing when I hover or focus on them.

We are redesigning the use and behaviour of filters. Fo this PR, the individual filter fields should be displayed as text. When you hover over one, some options become available to edit, delete and lock the field.
When 'edit' is selected, the field row becomes editable, and you can change the values for the filter field.

![image](https://f.cloud.github.com/assets/933400/1591250/a2826738-529f-11e3-8017-dd20a2f40c1b.png)

![image](https://f.cloud.github.com/assets/933400/1591266/0b27718e-52a0-11e3-9744-f6e7aacb9a10.png)




__General Requirements__
- [x] Pull Request contains full description of changes
- [x] Link to the Pivotal Tracker story
- [x] Rebased against latest master branch
- [x] There are no `-1` code reviews (can only be overridden by Kyle)

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__Coding Standards__
- [ ] Style guidelines are followed, code has been formatted
- [ ] Code follows idiomatic language paradigms

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__Testing__
- [ ] Test coverage has not decreased
- [ ] There is no performance degradation
- [ ] All appropriate automated tests are present
- [ ] Appropriate seed data exists


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__Documentation__
- [ ] Major design decisions have been documented on the wiki
- [ ] Deployment impact (changes required for new services, configuration, etc.)
- [ ] documentation links from Pull Request

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__UI/UX__
- [ ] applicable (UI/UX has been changed)
- [ ] reviewed for usability and design
- [ ] functions on 1024*768 browser size
- [ ] works on IE8

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__Shared Project / Dependencies__
- [ ] Reviewed by Architect
- [ ] API changes to shared components documented on wiki
- [ ] 3rd-party library introduced:
- [ ] explanation for updating a project dependency (e.g. 'latest version fixes a bug')

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__Defect__
- [ ] Feature or defect resolution has been manually tested and meets all requirements of the underlying story
- [ ] Seed data sufficient to satisfy testing resolution of defect
- [ ] Root cause analysis provided