JBIDE-17107 Visual Preview: CSS and images very often don't show up after refresh / editing

- disabling file caching
JBIDE-17083 Visual Preview: Implementing scrolling and ui selection for refresh options (automatic refresh / refresh on save). Changing refresh icon. Refactoring
Build infrostructure for vpv fixed
JBIDE-17155 Visual Preview: Fixing ui selection after refresh. Disabling alerts
JBIDE-17155 Visual Preview: Refactoring. Speeding up outline selection on windows
JBIDE-16908 Create separate view for previewing HTML files

Preview added as a part of Visual Editor
Preview feature renamed
JBIDE-17163 Visual Preview: Adding related css, js files support. Refactoring