FlashFXP 4.4.3 build 2027

- Fixed an application crash which could sometimes be triggered by the loss of connection or disconnecting from the remote server.
- Fixed a crash on shutdown that prevented FlashFXP from cleanly closing and sometimes leaving processes running in the background, this was caused by a missing sanity check in the destructor of our threaded timer pool.
- Fixed an issue in the Site Manager that could trigger an access violation when selecting some sites followed by a group. The A/V was caused by code responsible for updating the bookmarks listview control. Specifically when clearing the items.
- Fixed an issue in the Site Manager that could trigger an access violation when using the search bar at the top of the window. The A/V was caused by a the tear down routine that cleared the treeview and updated treeview with matching sites.
- While reviewing the code changes that were implimented to solve the incomplete upload problem I discovered a mistake that failed to deallocate a timer ID from our timer pool (when the object.reset method was called object.remove, resetting the object to the inital state changed the timer ID) and as a result eventually the timer pool became full, disgarding any new requests for a timer ID. As a result some UI elements such as progress bars, the status window console, etc didn't update.