Reorganize documentation source directories

- move all images (screenshots) to new folder documentation/images/
- move documentation/src/fltk-title.tex.in to documentation/
- fix .gitignore files (remove obsolete entries etc.)
- FL/Fl_Tooltip.H: fix '\image latex' reference
- documentation/CMakeLists.txt: update ref. to fltk-title.tex.in
- documentation/Doxyfile.in: adjust image path (IMAGE_PATH)

1 files changed, 0 insertions, 0 deletions

diff --git a/documentation/src/tree-elements.png b/documentation/src/tree-elements.png
deleted file mode 100644
index 4218a36c9..000000000
--- a/documentation/src/tree-elements.png
+++ /dev/null