Plugin links: fix various errors, closes #912 @2h Import uriparser to decode URLs correctly with fragment and query support for a better link decomposition. Improve pre-check message to allow people writing text after the link, e.g: http://example.org <- you should check this Improve relocation. Split code for better style.

# Build directory used in lots of documentation.
^build

# Qt Creator creates CMakeLists.txt.user.
^CMakeLists\.txt\.user$

# vim/emacs specific.
^tags$
^tags\.lock$
^tags\.temp$
\.swp$
\.swo$

# macOS specific.
\.DS_Store$