doctor: style nits
neo4j: add caveat for JRE 7

Closes #20061.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
chicken 4.8.0.3

Closes #20064.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
crash: update homepage

Closes #20050.
Scala --devel 2.10.2-RC1

Closes #20034.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
libswiften 2.0

Closes #19990.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>