Multiple bug fixes

【Contents of the fix】
■SSL support for SNS buttons.
■Fixed a bug in which the quality of thumbnails on the top page “Project Contents” dropped.

【Modified file】
front-page.php
functions.php
sns-btn-btm.php
sns-btn-top.php
style.css

更新情報をテーマ毎に検索する

CODE.(TCD090) FALCON (TCD089) SOLARIS (TCD088) DROP (TCD087) meets (TCD086) Muum (TCD085) MASSIVE（TCD084） ANTHEM（TCD083） CURE（TCD082） Tree（TCD081） HAKU（TCD080） FORCE(TCD078) HEAL (TCD077) Be (TCD076) EVERY （TCD075） FAKE（TCD074） GLAMOUR（TCD073） NOEL（TCD072） MIKADO (TCD071) NUMERO（TCD070） TOKI(TCD069) ROCK(TCD068) ZOOMY（TCD067） DIVA(TCD066) NANO(TCD065) FAMOUS (TCD064) Switch (TCD063) ICONIC(TCD062) ONE (TCD061) AVANT（TCD060） AGENDA (TCD059) RUMBLE(TCD058) BIRTH（TCD057） KADAN (TCD056) ZERO (TCD055) BEAUTY(TCD054) Bloom（TCD053） STYLY (TCD052) VOGUE (TCD051) GENSEN(TCD050) BRIDGE（tcd049） OOPS!（TCD048） ANGEL（TCD047） SKIN（TCD046） SOURCE (TCD045) UNIQUE (TCD044) MAXX (TCD043) MONOLITH (TCD042) STORY (TCD041) Avalon (TCD040) LOTUS (TCD039) VENUS (TCD038) ORION (TCD037) MAG (TCD036) BLOC (TCD035) IZM (TCD034) AGENT (TCD033) VIEW (TCD032) LAW (TCD031) FOCUS (TCD030) SWEETY (TCD029) AMORE (TCD028) CORE (TCD027) Reviewer (TCD026) INNOVATE HACK (TCD025) PHOTEK (TCD024) CUBEY (TCD023) LUXE (TCD022) NEXTAGE (TCD021) Logue (TCD020) Precious (TCD019) Opinion (TCD018) Canvas (TCD017) Chill (TCD016) Grider (TCD015) AN (TCD014) Gorgeous (TCD013) TCD Google Maps TCD Workflow Common