Sentence Fragment Editing

## Background Information
Following the introduction of the "Sentence Fragment" content type at AletheiaFact.org, there is a need to implement a feature for revising and adjusting fragment ranges. This enhancement will allow fact-checkers to modify the selected portions of a sentence after their initial selection, ensuring greater accuracy and flexibility in the fact-checking process.

### User Stories

- As a fact-checker, I sometimes need to adjust the boundaries of the sentence fragments I've selected, as further analysis might reveal additional context or nuances.
- As a quality assurance specialist, I must ensure that the fragments selected for fact-checking are the most relevant and accurate portions of the text. The ability to revise fragment ranges is crucial for maintaining high standards.

## What
Implement a feature that allows fact-checkers to revise and adjust the ranges of sentence fragments they have selected for fact-checking.

## How

- Fragment Adjustment Tool: Develop a user-friendly interface that allows fact-checkers to easily modify the start and end points of selected sentence fragments.
- Integration with Claim Schema: Ensure that the fragment adjustment feature aligns with the existing ClaimSpec schema and does not compromise the integrity of the stored data.
- Version Control: Implement a version control system to track changes made to the fragment ranges, preserving the history of adjustments.
- Real-time Preview: Provide a real-time preview feature that shows the effects of the adjustments on the fragment before finalizing.
- Training and Documentation: Update training materials and documentation to guide fact-checkers in using the new feature effectively.
- Feedback Mechanism: Establish a feedback loop to gather user input on the feature for continuous improvement.

## Acceptance Criteria
- [ ] Ease of Use: The tool for revising and adjusting fragment ranges should be intuitive and easy to use.
- [ ] Data Integrity: Adjustments to fragment ranges must maintain the integrity of the data within the ClaimSpec schema.
- [ ] Trackability: The system should track and record all changes made to the fragment ranges for accountability and transparency.
- [ ] Stability and Performance: The introduction of this feature should not adversely affect the system's performance or stability.
- [ ] Positive User Feedback: Fact-checkers should find the feature helpful and effective in enhancing their fact-checking process.
- [ ] This task is crucial for refining the sentence fragment fact-checking process, making it more adaptable and precise for fact-checkers.