Only one tab at a time on the Options Panel

Modify the logic of tabs selection on the Options Panel: only one tab can be selected at a time.

The following GUI tests should be added on the testing phase:

TEST1
Step1: Select a tab header
Expected result: the tab has been opened

Step2: Select the tab header again
Expected result: the tab has been closed

Step3: Select the tab header again
Expected result: the tab has been opened again

TEST2
Step1: Select different tab
Expected result: only one selected group is shown at a time

Step2: Select different tabs, holding "Ctrl"
Expected result: only one selected group is shown at a time

TEST3
Step1: Open Sequence View, press "Ctrl+F"
Expected result: "Search in Sequence" tab has been opened, the pattern field is in focus

TEST4
Step1: Open Sequence View, open "Annotations Highlighting" tab of the Options Panel, press "Ctrl+F"
Expected result: "Search in Sequence" tab has been opened, other tabs have been closed

TEST5
Step1: Open Sequence View, "Search in Sequence" tab, remove focus from the pattern field, press "Ctrl+F"
Expected result: "Search in Sequence" tab is still opened, the pattern field is in focus