Feature/gradient slider change markers
Fix Bug 34376

Add support of travis build

v4.3.0

+ revert Commit: 4cc07218 and fix bug with updating table settings in strict mode: change table style by one user and getting changes by another user (combodataview didn't update).

+ Bug with closing menus by clicking to the input fields: open context menu or combobox, click at any of metric spinners or editable comboboxes -> menu closed, focus goes from spinner/combobox to canvas.

Update table settings in strict mode: change table style by one user and getting changes by another user (combodataview didn't update.).

[SSE] AutoFiltersDialog: set 'Select All' option to 'indeterminate' state, if cells list contains checked and unchecked items.

Changes for fast co-editing mode when count of users>2: always send 'onDocumentStateChange' event , draw '*' in the document caption while user is editing document.