Conversion: timelines

Pages like `2016-07-21_-_KNIME_Image_Processing_hackathon.mw` include timelines which don't work on the new page.

Example (original code):
```

Preset = TimeHorizontal_AutoPlaceBars_UnitYear

ImageSize = width:600

Colors =
id:c01 value:blue
id:c02 value:red
id:c03 value:green
id:c04 value:black
id:c05 value:magenta
id:c06 value:teal
id:c07 value:yelloworange
id:c08 value:skyblue
id:c09 value:claret
id:c10 value:oceanblue
id:c11 value:purple
id:c12 value:powderblue
id:c13 value:coral
id:c14 value:redorange
id:c15 value:kelleygreen
id:c16 value:orange
id:c17 value:lightpurple
id:c18 value:tan2
id:c19 value:gray(0.3)
id:c20 value:blue
id:c21 value:red
id:c22 value:green
id:c23 value:black
id:c24 value:magenta
id:c25 value:teal
id:gridLine value:gray(0.5)
id:gridCanvas value:gray(0.8)

BackgroundColors = canvas:gridCanvas

Period = from:5 till:14

ScaleMajor = unit:year increment:1 start:5 grid:white

LineData =
at:5 color:gridLine layer:back width:0.5
at:6 color:gridLine layer:back width:0.5
at:7 color:gridLine layer:back width:0.5
at:8 color:gridLine layer:back width:0.5
at:9 color:gridLine layer:back width:0.5
at:10 color:gridLine layer:back width:0.5
at:11 color:gridLine layer:back width:0.5
at:12 color:gridLine layer:back width:0.5
at:13 color:gridLine layer:back width:0.5
at:14 color:gridLine layer:back width:0.5

BarData=
barset:Hackers

PlotData=
width:15
fontsize:M
textcolor:white
align:left
anchor:from
shift:(4,-4)
color:black

barSet:Hackers
color:c01 from:11 till:14 text:"Tim-Oliver Buchholz (UniKN)"
color:c02 from:8 till:9 text:"Joshy Cyriac (USB, 4Quant)"
color:c03 from:7 till:13 text:"Richard Domander (RVC)"
color:c04 from:7 till:10 text:"Kevin Mader (4Quant, ETHZ)"
color:c05 from:7 till:10 text:"Simon Schmid (UniKN)"
color:c06 from:7 till:9 text:"Marcel Wiedenmann (UniKN)"
color:c07 from:7 till:8 text:"Jan Eglinger (FMI Basel)"
color:c08 from:5 till:13 text:"Kyle Harrington (HMS)"
color:c09 from:6 till:12 text:"Curtis Rueden (UW-Madison)"
color:c10 from:5 till:14 text:"Christian Dietz (UniKN)"
color:c11 from:5 till:14 text:"Patrick Winter (UniKN)"
color:c12 from:5 till:14 text:"Tobias Pietzsch (MPI-CBG)"
color:c13 from:5 till:14 text:"Ulrik Günther (MPI-CBG)"
color:c14 from:5 till:14 text:"Martin Horn (UniKN)"
color:c15 from:5 till:14 text:"Andreas Burger (UniKN)"
color:c16 from:5 till:14 text:"Alexander FIllbrunn (UniKN)"
color:c17 from:5 till:14 text:"David Hörl (LMU Munich / MDC Berlin)"
color:c18 from:5 till:13 text:"Jonathan Hale (UniKN)"
color:c19 from:5 till:12 text:"Nico Hoffmann (TUD)"
color:c20 from:5 till:9 text:"Stefan Helfrich (UniKN)"
color:c21 from:5 till:8 text:"Cyril Mongis (Uni-Heidelberg)"

```

Start by inspecting 2016-07-21_-_KNIME_Image_Processing_hackathon.mw and its embedded markup. Determine how the new page handles this content, then verify that the converted timeline renders correctly and that the original timeline information is preserved.

Written by the indexing model from the issue text.