Adding raw anim file upload support

Save the files listed below and attached to this jira into a folder that has files of other types in it Save the file crouchwalk-anim.anim Save it again as crouchwalk-anim2.anim Save crouchwalk.bvh Launch the viewer Test 1 Click Build->Upload->Animations: see that .bvh and .anim are in the file type filter Navigate to where you saved the files: see that only the 3 files you saved are shown in the file chooser; the other files in that directory are not displayed In the file chooser select crouchwalk.bvh In the upload floater check on Loop Click on Upload Open your inventory Open the Animations folder Right click on crouchwalk and select "Play locally": see that the animation is working Delete this crouchwalk Test 2 Click Build->Upload->Animations In the file chooser select crouchwalk.anim Modify the Name in the upload floater to "Mycrouchwalk" Modify the Description in the upload floater to "Test" Click on Upload Open your inventory Open the Animations folder: see that Mycrouchwalk is present Right click on Mycrouchwalk and select "Play locally": see that the animation is working Right click on Mycrouchwalk and select "Properties": see that the description is "Test" Delete Mycrouchwalk Test 3 Click Build->Upload->Bulk In the file chooser select crouchwalk.anim and crouchwalk2.anim Open your inventory Open the Animations folder: see that crouchwalk and crouchwalk2 are present Right click on crouchwalk and select "Play locally": see that the animation is working Right click on crouchwalk2 and select "Play locally": see that the animation is working Delete crouchwalk and crouchwalk2 In the inventory floater click on the "+" Repeat Test 1, Test 2, and Test 3 using the Upload menu in the inventory floater Note 1: The anim and bvh files should both play the same: walking crouched down with swinging arms indefinitely Note 2: In testing the anim file sometimes stopped; I am assuming this is a viewer display bug