Patch: includes/entity, modules/taxonomy/taxonomy.test

To prevent following error message:
Notice: Array to string conversion in DrupalDefaultEntityController->cacheGet() (line 364 of /Users/kresimirnikolic/Development/iaea-responsive/www/includes/entity.inc).

Signed-off-by: Kresimir Nikolic <kresimir.nikolic@gmail.com>
Theming: static images added instead of lorempixel

Signed-off-by: Kresimir Nikolic <kresimir.nikolic@gmail.com>
Theming: page.tpl.php updated

Signed-off-by: Kresimir Nikolic <kresimir.nikolic@gmail.com>
Theming: page.tpl.php updated. Logo and navigation. Social media icons list still don't display icons - Mono Social Icons Font

Signed-off-by: Kresimir Nikolic <kresimir.nikolic@gmail.com>