[SV] Support templates used in etymologies

[BoboTiG]

Since etymologies are now supported (via #139), new templates show up!

• [x] Missing 'härledning' template support (4,582 times), example in: "-a", "-aktig", "-bo" (see #725 for some discussion about a similar template)
• [x] Missing 'kognat' template support (100 times), example in: "Mjölner", "Tor", "aktiv"
• [x] Missing 'länk' template support (132 times), example in: "-gram", "Abraham", "Alfred"
• [x] Missing 'f' template support (30 times), example in: "armod", "baldersbrå", "beryll"
• [x] Missing 'm' template support (18 times), example in: "afton", "fris", "gom"
• [x] Missing 'p' template support (3 times), example in: "kalsong", "seraf", "silur"
• [x] Missing 'u' template support (2 times), example in: "bankett", "jul"
• [x] Missing 'npl' template support (2 times), example in: "jul", "tidende"
• [x] Missing 'fpl' template support (2 times), example in: "lövja", "röse"
• [x] Missing 'källa-so' template support (1 times), example in: "grävling"