Misc. typos and whitespace fixes

Found via `codespell -q 3 -I ../rawtherapy-whitelist.txt -S ./rtdata` 
`rawtherapy-whitelist.txt` consists of:
```
adn
amin
autor
ba
byteorder
cas
childs
developpement
dum
foto
fro
inbetween
interm
ist
iten
ith
lonly
nd
ois
optio
preserv
skipp
som
spred
substracted
tbe
tim
uint
unselect
```

tools/color_management.svg

@@ -548,7 +548,7 @@
          sodipodi:role="line"
          id="tspan5376"
          x="100.83148"
-         y="648.47211">Used fo image analysis <tspan
+         y="648.47211">Used for image analysis <tspan
    style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold'"
    id="tspan7948">only</tspan> with</tspan><tspan
          style="font-size:10px"
@@ -567,7 +567,7 @@
          x="436.97083"
          id="tspan5396"
          sodipodi:role="line"
-         style="font-size:10px">Used fo image analysis with</tspan><tspan
+         style="font-size:10px">Used for image analysis with</tspan><tspan
          id="tspan5398"
          y="660.97211"
          x="436.97083"