Fix general rule for buttons (PR #4, from @karlprieb)

This is mainly for fixing the login button, but overrides the styling of other buttons as well in case they have the same inconsistency

appinfo/info.xml

@@ -8,7 +8,7 @@
 # Unrounded Corners
 A Nextcloud app that restores the corners of buttons and widgets to their original looks by unrounding them.
     ]]></description>
-    <version>1.0.1</version>
+    <version>1.0.2</version>
     <licence>agpl</licence>
     <author mail="me@oliverparoczai.org" homepage="https://oliverparoczai.dev">Oliver Paroczai</author>
     <namespace>UnroundedCorners</namespace>

css/unround.css

@@ -22,3 +22,14 @@
 #uploadprogressbar { /* For upload progress bar */
     border-radius: var(--border-radius-pill) 0 0 var(--border-radius-pill) !important;
 }
+
+/* For buttons */
+input[type='submit'],
+input[type='submit'].icon-confirm,
+input[type='button'],
+button,
+a.button,
+.button,
+select {
+    border-radius: var(--border-radius-pill) !important;
+}