Add some functions

[bedroesb]

• [x] All tools and resources listing
• [x] All training listing
• [x] National tools overview page
• [x] ELIXIR Toolkit Theme in footer
• [x] Excluding the index page from the national tools overview page
• [x] Add development banner when it is not the man deployment of IDTk

[bedroesb]

:partying_face: