Update angle svgs simultaneously as value changes

Validate filter input value according to api specs

The 2.1 patch makes a number of quality improvements incl bug fixes and standardizing experiences between Planet's QGIS Plugin and Explorer apps, it also significantly revamps the download/order checkout process.

In 2.1 Users can find:

• Full support for imagery assets across all Planet item types such as rectified and un-rectified assets
• Consistent download experience between Planet Explorer and the ArcGIS Add-In
• An improved imagery checkout process with clearer documentation for imagery assets
• Support for arbitrary geometry clipping and multi-polygon clipping

New angle fields on order entry

Cloud forecast for assured order

Cloud forecast in order detail view of assured order