Enhance ROI pages (#2161)

* Check if the ROIs are equidistant. Only if not, untick the checkbox

* renaming

* Check if the ROIs have same y, dy and dx. If so, tick the sync checkbox

* only allow editing space when box is checked

* fix sync check

* show inner frame on all ROIs

* cleanup

* Check if the ROIs have same dy and dx. If so, tick the sync checkbox

* checkbox position

* renaming

* renaming

* show inner frame and cross hairs on all ROIs

* update ROIs on ticking checkboxes

* show timezone hint

* fix deleting last ROI

* cleanup

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Co-authored-by: CaCO3 <caco@ruinelli.ch>

sd-card/html/edit_config_param.html

@@ -1309,6 +1309,7 @@ textarea {
 			</td>
 			<td>
 				<input type="text" id="System_TimeZone_value1">
+				<p>Use <a href="timezones.html" target="_blank">timezones.html</a> to find your correct settings.</p>
 			</td>
 			<td>$TOOLTIP_System_TimeZone</td>
 		</tr>