add Russian (Student) layout (#640)

app/src/main/assets/layouts/russian_student.txt

@@ -0,0 +1,33 @@
+я
+ш
+е
+р
+т
+ы
+y
+и
+о
+п
+э
+
+а
+с
+д
+ф
+г
+ч
+й
+к
+л
+ж
+щ
+
+з
+х
+ц
+в
+б
+н
+м
+ь
+ю

app/src/main/res/values/strings.xml

@@ -310,6 +310,9 @@
     <!-- Description for "LANGUAGE_NAME" (Sebeolsik Final) keyboard subtype [CHAR LIMIT=25]
          (Sebeolsik Final) can be an abbreviation to fit in the CHAR LIMIT. -->
     <string name="subtype_generic_sebeolsik_final"><xliff:g id="LANGUAGE_NAME" example="Korean">%s</xliff:g> (Sebeolsik Final)</string>
+    <!-- Description for "LANGUAGE_NAME" (Student) keyboard subtype [CHAR LIMIT=25]
+         (Student) can be an abbreviation to fit in the CHAR LIMIT. -->
+    <string name="subtype_generic_student"><xliff:g id="LANGUAGE_NAME" example="Russian">%s</xliff:g> (Student)</string>
     <!-- This string is displayed in a language list that allows to choose a language for
 suggestions in a software keyboard. This setting won't give suggestions in any particular
 language, hence "No language".

app/src/main/res/xml/method.xml

@@ -81,6 +81,7 @@
     pt_PT: Portuguese (Portugal)/qwerty
     ro: Romanian/qwerty
     ru: Russian/russian
+    ru: Russian (Student)/russian_student
     si_LK: Sinhala (Sri Lanka)/sinhala # This is a preliminary keyboard layout.
     sk: Slovak/qwerty
     sl: Slovenian/qwerty
@@ -803,6 +804,15 @@
             android:imeSubtypeExtraValue="KeyboardLayoutSet=russian,SupportTouchPositionCorrection,EmojiCapable"
             android:isAsciiCapable="false"
     />
+    <subtype android:icon="@drawable/ic_ime_switcher"
+            android:label="@string/subtype_generic_student"
+            android:subtypeId="0x1bc335d0"
+            android:imeSubtypeLocale="ru"
+            android:languageTag="ru"
+            android:imeSubtypeMode="keyboard"
+            android:imeSubtypeExtraValue="KeyboardLayoutSet=russian_student,SupportTouchPositionCorrection,EmojiCapable"
+            android:isAsciiCapable="false"
+    />
     <!-- TODO: This Sinhala keyboard is a preliminary layout.
                This isn't based on the final specification. -->
     <!-- si_LK is currently disabled due to lack of combination rules. -->