Added text notification when old password is entered but new password isn't

[saberlynx]

Also added notification when new passwords are entered but old one isn't.
Checklist:

• [] Tests
• CHANGELOG Entry

[codecov]

Codecov Report

Merging #1636 into gsa-8.0 will decrease coverage by 0.01%.
The diff coverage is 0%.

@@             Coverage Diff             @@
##           gsa-8.0    #1636      +/-   ##
===========================================
- Coverage    37.47%   37.46%   -0.02%     
===========================================
  Files          966      966              
  Lines        22093    22101       +8     
  Branches      6231     6212      -19     
===========================================
  Hits          8280     8280              
- Misses       12489    12495       +6     
- Partials      1324     1326       +2

Impacted Files	Coverage Δ
gsa/src/web/pages/usersettings/generalpart.js	21.42% <0%> (-8.58%)	⬇️

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