Corrected a typo in Tessellator#addQuadraticVertex()

Fixes #2648 - corrected a typo in a5cbb0e2
Fixed error reporting for bez/quad/curve vertices

When user calls bezierVertex()/quadraticVertex()/curveVertex() and does
not call beginShape()/beginShape(POLYGON) before or forgets to specify
first vertex(), proper error message is shown.
Merge remote-tracking branch 'original/master'
Add Japanese language
Fix #2004 - Indent breaks when hitting enter before spaces
Fix missing "=" in .properties file
Merge pull request #2690 from AmnonOwed/Fix2004-IndentBreaksOnEnterBeforeSpaces

Fix #2004 - Indent breaks when hitting enter before spaces
Merge pull request #2689 from tyfkda/fix-missing-equal

Fix missing "=" in .properties file
Merge pull request #2688 from tyfkda/add-lang-ja

Add Japanese language
deal with some warnings and other notes
remove settings that used source version 1.6
Add Spanish language
Fix typo "platforms" in PDE.properties
Merge pull request #2691 from federicobond/es-language

Add Spanish language
Add Dutch language
Merge pull request #2693 from AmnonOwed/FixTypoProperties

Fix typo "platforms" in PDE.properties
Merge pull request #2694 from AmnonOwed/AddDutchLanguage

Add Dutch language
fix indents and cleanups
merging changes for languages
slightly more automatic means of adding languages