#213 a few comfort features (shortcuts/find functions)

[Pete Bernert]

1. an option for a "wrap around search" would be nice
   (in the "find text" dialog). If activated, the search
   should start on top again automatically, instead of
   displaying the "search string ... not found"
   information messagebox, after the last search result
   has been found.

2. configurable shortcuts for "go to next compiler
   error" (it's a bit tiresome to jump to the next error
   by doing a double click in the error list). Also a
   shortcut for "jump to next 'find result'" when doing a
   "Find in Files" operation.

3. a new option in the "Find in Files" dialog:
   currently you can specify "Files in Project" and "Open
   files" as "where to search". It would be helpful if it
   would be possible to select also a complete directory
   (including the sub directories) for the search action
   (since often you have to search in some global header
   files, or other source projects, for specific stuff).