Akademy 08: Kate Flashback

This Akademy's Kate changes include

• fix: drag & drop of text
  
• code completion: only show group header if the group name is not empty
• reintroduction of buffer blocks in Kate's document buffer (one buffer contains up to 4096 lines). The blocks build a linked list. Editing a 500 MB file kind of works now again. It's still rather slow, though.
• more speedup in Kate's document buffer
• Kate is using KEncodingProber instead of KEncodingDetector now
• generate internal version of KatePart automatically, so developers don't have to adapt it manually each release
• python encoding detection plugin that warns if encoding is not correct while saving
• new plugin: Backtrace browser, mainly for developers
• find in files: several speed optimizations
• find in files: progress indicator while search is active
• find in files: redesign of workflow. Search happens with non-modal dialog and results are shown in toolviews.
• lots of vi mode changes
• lots of bugs closed, mainly old ones
• some real bug fixes...
• things I forgot