Upgrade to v0.14.0 of Syna theme

[mpourismaiel]

• No breaking changes concerning the starter
• Links to documentation updated [need demo to be updated]
• Build files updated

[stp-ip]

• [x] decide on v0.14 branch vs tag
• [x] decide on /docs/ prerelease

[mpourismaiel]

Switched to v0.14 branch. Also changed the docs links to Github. Perhaps changing the docs would be a good idea. It would take some time but at least the release would be clean. Also Hugo-v0.50 created some problems for us. I'm working on it so maybe we can wait on this PR a little longer?

[stp-ip]

Sure will wait until v0.50 is done.

[mpourismaiel]

Okay this should be done now.

[stp-ip]

\o/