IDE: Call ReAlignButtons in OnScrollBoxResize also during startup. Needed on Windows.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@47114 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: Call ReAlignButtons only for the active page at the end of UpdateNoteBookButtons.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@47115 4005530d-fff6-0310-9dd1-cebe43e6787f