Add Full Word search

[Harjot1Singh]

Adds support for anchor based searching.

Closes #147.

[bhajneet]

Issues with inserting accent chars. My first guess would be the interpreter for unicode/ASCII in search causes accents to be placed differently. Backspace is not following the interpreter rule. So either use pure ASCII convention or pure Unicode convention for adding/removing accents.

Example: #bi<backspace>
Example: #pRb vis you'll see the i char go behind the v and then after typing the s it will go back even another char. Then try adding more chars or backspacing from here. It will keep going back another char.
Example: #hm qy ki (unicode style) or #hm qy ik (ascii style) should be showing the result ਹਮ ਤੇ ਕਿਛੂ ਨ ਹੋਇ ਮੇਰੇ ਸ੍ਵਾਮੀ

[bhajneet]

Same rules as first letters is not being applied to full words regarding K vs ^ (khakka) or a vs E (oorha).

Example: Searching #Kwlsw is not showing results for #^wlsw.

[bhajneet]

First letters never had a rule about halant. It is not common knowledge which words end with a halant character. It should be added to the exceptions like above example of #Kwlsw

Possibly add tippi and bindi to the list for last char exclusions.

Definitely add i and u to the list for last char exclusions. People cannot hear the difference between ਬੋਲ and ਬੋਲਿ or ਰਾਮ and ਰਾਮੁ

Example: Searching #jin ky B is not showing the line ਜਿਨੑ ਕੇ ਭਾਗ ਬਡੇ ਹੈ ਭਾਈ ਤਿਨੑ ਸਾਧੂ ਸੰਗਿ ਮੁਖ ਜੁਰੇ ॥

[bhajneet]

Hitting the <end> key inside the search box will move the cursor to the end as expected and also highlights the last search result. Problem is hitting space after this will activate the highlighted search result instead of adding a space to the search box. Only the <enter> key should be activating the highlighted search result.

Example: #jw kw<end><space>

[bhajneet]

Vishraam causes an issue for following search ਖੂਬੁ ਖੂਬੁ ਖੂਬੁ ਖੂਬੁ ਖੂਬੁ ਤੇਰੋ ਨਾਮੁ ॥

Example: #KUbu KUbu works. #KUbu KUbu<space> fails.

[bhajneet]

Incorrect highlighting. See first letter in results 3-5.

[bhajneet]

approved on the basis that the rest of the issues can be fixed over time (now separated into their own issues)