Implements hyperlinking to specific post from rss.
Removes unneeded stats calls during rss generation.
Implements post activity rss feed for main page.
Adds visible links to rss feeds along with svg icon.
Corrects developer documentation header link.
Checks user input length after removing whitespace. Refs #2.
Fixes self references of XML feeds, there can only be one.
Adds author tag to xml feed.
Merge branch 'pr_implements_rss' of git://github.com/gradha/nimforum into gradha-pr-implements-rss

Conflicts:
	forum.nim
	main.tmpl
Moved RSS feed links to the bottom of the page.
Merge branch 'pr_fixes_dev_docs_link' of git://github.com/gradha/nimforum into gradha-pr_fixes_dev_docs_link
Merge branch 'pr_improves_empty_input_checks' of git://github.com/gradha/nimforum into gradha-pr_improves_empty_input_checks