Implemented ticket #374 "Add warnings for deprecated functions"
Implemented ticket #447 "Add 'switch' to the static code analyzer"
Implemented ticket #223 "Create a variables widget"
Fixed issue #449 "Large tables load and react slow"
Intermediate commit for ticket #223 and #395
Implemented ticket #430 "Renaming - Check Boxes"
Implemented ticket #441 "Renaming - Warning in case the new variable is already in use"
Implemented ticket #448 "Improve the architecture of the options dialog"
Fixed a little issue in implementation of ticket #436
Fixed an issue in implementation of ticket #6