Enable the jasmine testsuite to work across LAN by setting its Host variable to "0.0.0.0" (instead of default 127.0.0.1) so you could test it with a foreign web browser.

closes #6234

closes #6226

closes #6223

Default home page: fix wiki link title; GitHub wiki is obsolete, because it has been moved from GitHub to independent resource.

closes #6212

Default home page: fix indent level; fix indentation level for configuration message block to make it looks like other blocks.

closes #6206, closes #6205

closes #6183

this is the suggested styling according to hound/pronto/rubocop
(#6192)

instead of before blocks creating instance variables
pronto checked

#6192

(#6192)

#6192

and dipatch is also called in the following test
#6192

instead of instance variables
(#6192)

since dispatch method is not private
(#6192)

refactor test: replacing instance variables in before blocks, renaming variables for easier understanding, simplify test set up with less different comments, correct two tests