Implemented retest feature

[thejohnbrown]

I have implemented a retest feature into Writehat which allows you to record and present the results from any vulnerability retesting that might occur for that engagement.

The following things have been added:

• A status option toggle has been added for each finding (open, fixed, not fixed, risk accepted, etc.)
• A retest field has been added to each finding for recording results of the retest
• A toggle has been added to the FIndings component which allows you to enable or disable the status for a particular finding group
• A new component has been added for summarising the retest results:

[TMDeal]

could you see about resolving the merge conflicts that this branch has with the github-dev branch?

[thejohnbrown]

Is there anything else required to get this merged?