hits per sheet optimisation

This MR is about the optimization of the search. It contains several improvements:

• result heading shows a total of all matches, the search term entered, as well as the numbers of distinctive sheets and manifests alike
• all terms mentioned received a numerus (singularization / pluralization) according to the amount of either hits
• the hits are shown line by line if there a multiples on a sheet (e.g. wildcard search)
• the result also lists the edition wherein the search term matched
• the hitlist is numbered from 1 to n

How to test?

• open up the environment: hits per sheet optimisation

• click on search located at the top bar

• enter a search term, e.g.

• حيقار

• السماء

• المعطر

• السماء OR حيقار

• السماء AND حيقار

• *م

closes: #94 (closed)