v0.5.0 - Message editing, and more

This release gets the editor one step closer to v1.0.0 . It includes the following:

• Editor of electronic messages (log, email, fragments)
• Refined loading system: Only known resource files are loaded now. This now requires that the resource files are named according to the original naming. This was done to avoid edge cases of various side-files being loaded as well, possibly overriding others (prime example: currsave.dat being used instead of archive.dat)
• Refined saving system: Only affected (changed) files are saved now, not all of them
• Auto-save feature. 5 seconds after the last change, the active mod is saved. As a nice addon, the project window shows in its title any pending changes and a countdown to the next save within 3 seconds.
• Ctrl+S also performs save