Castle.cms

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- tweak tour text
[tkimnguyen]

- fix CastleCMS spelling
[tkimnguyen]

- tweak installation instructions
[tkimnguyen]

- add version pins
[tkimnguyen]

- remove duplicate location of site announcement settings
[tkimnguyen]

- correct typos; add descriptions to control panels
[tkimnguyen]

- improve URL shared via sharing buttons
[tkimnguyen]

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- print.css improvements
[robzonenet]

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- accessibility and print.css improvements
[robzonenet]

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- 2-level nav improvements for mobile
[robzonenet]

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- Fixed the missing print stylesheet
[robzonenet]

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- Fixed issue breaking the history view on content
[obct537]