Fill tool docs & ensuring PO translations

And also grabbing txt versions of recent fr_FR updates.

src/po/ru.po

@@ -9,7 +9,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: TuxPaint\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-20 17:52-0800\n"
+"POT-Creation-Date: 2021-02-20 20:40-0800\n"
 "PO-Revision-Date: 2017-12-23 10:13+0300\n"
 "Last-Translator: Yuri Kozlov <yuray@komyakino.ru>\n"
 "Language-Team: Russian <debian-l10n-russian@lists.debian.org>\n"
@@ -202,6 +202,38 @@ msgstr "<9>дополнительная-9a"
 msgid "<9>spare-9b"
 msgstr "<9>дополнительная-9b"
 
+#: ../fill_tools.h:49
+msgid "Solid"
+msgstr ""
+
+#: ../fill_tools.h:50
+#, fuzzy
+#| msgid "Lines"
+msgid "Linear"
+msgstr "Линии"
+
+#: ../fill_tools.h:51
+msgid "Radial"
+msgstr ""
+
+#: ../fill_tools.h:55
+#, fuzzy
+#| msgid "Click in the picture to fill that area with color."
+msgid "Click to fill an area with a solid color."
+msgstr "Щёлкните, чтобы заполнить эту область цветом."
+
+#: ../fill_tools.h:56
+msgid ""
+"Click and drag to fill an area with a linear gradient (from the chosen color "
+"to transparent)."
+msgstr ""
+
+#: ../fill_tools.h:57
+msgid ""
+"Click to fill an area with a radial gradient (from the chosen color to "
+"transparent)."
+msgstr ""
+
 # Поздравление №1
 #. Congratulations #1
 #: ../great.h:37