thesis.bib: updated
wigner-bec/hamiltonian: reworked, along with connected parts
buildbib: added some journal title abbreviations
chapters/func-calculus: fixed problem with the wrong assumption that mode functions turn to zero on the boundaries
chapters/wigner/func: some cosmetic changes to the lemma about differential of D
chapters/wigner-spec: fixed a section title
Added appendix about basis sets
chapters/bases: added a separate section for harmonic basis proper