Fix alignment of language menu when RTL.
Fix alignment of language menu when RTL.

google/blockly,trinketapp/blockly,rachel-fenichel/blockly,jstnhuang/blockly,joshlory/blockly,jstnhuang/blockly,twodee/blockly,google/blockly,google/blockly,joshlory/blockly,groklearning/blockly,picklesrus/blockly,twodee/blockly,trinketapp/blockly,rachel-fenichel/blockly,twodee/blockly,mark-friedman/blockly,rachel-fenichel/blockly,mark-friedman/blockly,joshlory/blockly,trodi/blockly,rachel-fenichel/blockly,picklesrus/blockly,mark-friedman/blockly,rachel-fenichel/blockly,groklearning/blockly,nickmain/blockly,google/blockly,jstnhuang/blockly,trinketapp/blockly,trodi/blockly,nickmain/blockly,rachel-fenichel/blockly,mark-friedman/blockly,twodee/blockly,twodee/blockly,nickmain/blockly,google/blockly,nickmain/blockly,mark-friedman/blockly,trodi/blockly,mark-friedman/blockly,rachel-fenichel/blockly,google/blockly,nickmain/blockly,trinketapp/blockly,google/blockly,picklesrus/blockly,twodee/blockly,groklearning/blockly,trodi/blockly,nickmain/blockly,jstnhuang/blockly,groklearning/blockly