clean up and reorganise repo

...us-gravity/plots/praeambels_and_definitions/.dropbox.attr

...tions/Diplomarbeitsskriptpraeambel/theoreme_und_farbe.tex

...lots/praeambels_and_definitions/L-Schema_Paper_makros.tex

...praeambels_and_definitions/artikel_theoreme_und_farbe.tex

...ity/plots/praeambels_and_definitions/artikelpraeambel.tex

...s/praeambels_and_definitions/lualatexartikelpraeambel.tex

...vity/plots/praeambels_and_definitions/special_symbols.tex

...y/plots/praeambels_and_definitions/theoreme_und_farbe.tex

RR-multi-patch-plus-gravity/plots/subsequent_errors.tex

...solution/RR-multi-patch-with-gravity-constant-solution.py

...R-multi-patch-plus-gravity/RR-multi-patch-with-gravity.py

...ds/multi-patch/RR-multi-patch-plus-gravity/plots/Makefile

...cache/Errornorm-exact-solution-over-time-with-gravity.dep

...cache/Errornorm-exact-solution-over-time-with-gravity.png

...ty/plots/Tikzcache/Errornorm-exact-solution-over-time.dep

...ty/plots/Tikzcache/Errornorm-exact-solution-over-time.png

...ty/plots/Tikzcache/RR-2-patch-subsequent_errors_t0.00.dep

...ty/plots/Tikzcache/RR-2-patch-subsequent_errors_t0.00.png

...ty/plots/Tikzcache/RR-2-patch-subsequent_errors_t0.01.dep

...ty/plots/Tikzcache/RR-2-patch-subsequent_errors_t0.01.png