Restore correct formatting

Many lines were not conformant with the project's formatting rules.
This patch should fix all formatting and whitespace issues in the code
base.
A clang-format directive was put around the connect() calls containing
SIGNALs and SLOTs whose signatures would be denormalized because of the
formatting rules.

src/core/Entry.h

@@ -36,7 +36,8 @@
 
 class Database;
 class Group;
-namespace Totp {
+namespace Totp
+{
     struct Settings;
 }