Multiple bug fixes

【Contents of the fix】
■【iPhone】Fixed an issue where the Hatena bookmark icon was not displayed on the share button in the fixed footer bar.
■Fixed a Notice error caused by an unnecessary description of the SNS button in the footer.
■Fixed a bug that the aggregate range setting of the ranking page was not saved correctly.
■Fixed a bug that the ranking list may not be displayed correctly without using alternative articles when the number of articles that can be displayed in the ranking is not enough.

The following are the files that have been modified for this update.

【Modified file】
admin/inc/footer.php
css/footer-bar.css
footer.php
functions/page_ranking.php
functions/update_notifier.php
languages/ja.mo
languages/ja.po
page-ranking.php
style.css
template-parts/footer-bar.php
widget/google_search.php

【Added files】
img/common/hatenabookmark-logomark.svg

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） EGO. （TCD079） 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 Common