Update certificate management page consistency

This change applies global styles to improve
page layout consistency and modal management

- Adds page and section styles
- Removes unused styles
- Creates individual html files for modals
- Updates certificate modals to bootstrap modal
- Updates global styles for input file field in file-upload.scss

TODO:
- Update certificate table with table component in separate commit
- Update CSR modal to use global form-field styles in separate commit

Signed-off-by: Dixsie Wolmers <dixsiew@gmail.com>
Change-Id: I9b800cb684740da1a9168294433e726efb0f9d0e
diff --git a/app/common/styles/elements/index.scss b/app/common/styles/elements/index.scss
index b1df113..9fee615 100644
--- a/app/common/styles/elements/index.scss
+++ b/app/common/styles/elements/index.scss
@@ -2,7 +2,7 @@
 @import "toggle-filter";
 @import "alerts";
 @import "inline-confirm";
-@import "input-file";
+@import "file-upload";
 @import "accordion";
 @import "loader";
 @import "content-search";