Merge branch 'developer' into stable

Merge branch 'developer' into stable

Merge pull request YetiForceCompany#4011 from YetiForceCompany/developer

YetiForce CRM ver. 4.0.0

Merge pull request YetiForceCompany#3641 from YetiForceCompany/master

YetiForce 3.4.0

Merge commit '3f56e2def1849c332b1d123262622c8a6707c5f7' into stable

Merge commit '5bdf8364791a1ef06b37da0c69412170a61e85e6' into stable

Merge pull request YetiForceCompany#3016 from YetiForceCompany/developer

YetiForce CRM ver. 3.1.0

Merge pull request YetiForceCompany#2875 from YetiForceCompany/developer

YetiForce CRM ver. 3.0.0

Merge pull request YetiForceCompany#2101 from YetiForceCompany/master

Master

Merge pull request YetiForceCompany#2036 from YetiForceCompany/master

Master