do not set breakpoints if clicked to the right of the gutter separator line

(cherry picked from commit 67f1289e181d05dc3e160b3661d91d2c528e130a)
trim hint name string to 200 symbols

(cherry picked from commit 4d5a070a3f940052103955737acab8455c94cd56)
set indent for left component only for horizontal (not "labelOnTop") layout
(cherry picked from commit e976ccb)
*preserve the old behavior of FormBuilder.setIndent method;
*deprecate FormBuilder.setIndent, because it changes the horizontal gap between label and its component (so, calling FormBuilder.setHorizontalGap(10) doesn't set the actual horizontal gap to 10px)
(cherry picked from commit da08fdb)
EA-56019 fix: don't create empty HTML blocks
(cherry picked from commit dd88cc4)
external system: message counter fixed
(cherry picked from commit 9f8b8c0) r: Roman Shevchenko