Fixed #794
Fixed #778: implemented new autosaving infrastructure
Merge branch 'master' of github.com:qreal/qreal into fix794
Styleguide fixes
Merge branch 'master' of github.com:qreal/qreal into fix778
Some autosaving improvement
Regroupping in mainwindow.pri
Merge pull request #845 from dvvrd/fix794

Fixed #794
Merge pull request #847 from dvvrd/fix778

Fixed #778
Замерджено, но оставшиеся замечания неплохо бы поправить
Merge pull request #854 from dvvrd/robots

Repaired robots build under linux
New version of square links mode
whitespace fix
Merge branch 'master' of https://github.com/qreal/qreal into square_links

Conflicts:
	qrgui/umllib/edgeElement.cpp
fixed problem with travis build
qrgui_unittests now is generated
qrxc_unittests is now generated
Merge pull request #857 from qreal/qreal-travisbuild

fixed problem with travis build
Merge pull request #856 from Ashatta/square_links

Square links