Drip - Better full-canvas effect; proper description

h/t Karl, code by Pere (w/ some clean-up by me)

Closes https://sourceforge.net/p/tuxpaint/bugs/256/

src/po/ar.po

@@ -9,7 +9,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: tuxpaint\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2022-07-03 16:31-0700\n"
+"POT-Creation-Date: 2022-07-03 16:39-0700\n"
 "PO-Revision-Date: 2008-10-07 14:54+0200\n"
 "Last-Translator: none\n"
 "Language-Team: none\n"
@@ -1423,12 +1423,18 @@ msgstr "انقر وحرّكُ الفأرة على الصورة لتحويلها
 msgid "Click to turn the entire picture into a chalk drawing."
 msgstr "انقر وحرّكُ الفأرة على الصورة لتحويلها إلى رسمة طبشورية."
 
-#: ../../magic/src/blocks_chalk_drip.c:174
+#: ../../magic/src/blocks_chalk_drip.c:176
 #, fuzzy
 #| msgid "Click and move the mouse around to make the picture drip."
 msgid "Click and drag the mouse around to make the picture drip."
 msgstr "انقر وحرّكُ الفأرة على الصورة لتحويلها إلى قطرات."
 
+#: ../../magic/src/blocks_chalk_drip.c:180
+#, fuzzy
+#| msgid "Click to sharpen the entire picture."
+msgid "Click to make the entire picture drip."
+msgstr "انقر  الفأره لجعل صورتك اكثر حده و وضوحا"
+
 #: ../../magic/src/blur.c:81
 msgid "Blur"
 msgstr "تمويه , شىء ضبابي"