added timeseries tests fix for IE

Fix footer tests

Fix footer tests: Change locators

Deleted welcomescreen action
Merge branch 'master' of https://github.com/alterm4nn/ChronoZoom
Bug #825: Visible profile icon and other fixes
Bug #811: Updated MSU logo and URL for footer
Bug #802: Breadcrumbs in header touches menu icons
Merge pull request #829 from javierluraschi/Fix825

Bug #825: Sign In button doubled
Merge pull request #830 from javierluraschi/Fix811

Bug #811: Updated MSU logo and URL for footer
Merge pull request #831 from javierluraschi/Fix802

Bug #802: Breadcrumbs in header touches menu icons
Update chromewebdriver

Fix marker_mouse test

Ignore welcomescreen test

Fix exhibit_should_allow_pdf_content_item_adding test
Merge branch 'master' of https://github.com/alterm4nn/ChronoZoom
Merge pull request #797 from a-chumagin/master

UI: Fix timeseries and footer tests